Frequently Asked Questions & Answers for Gripping Products

Are worn seals preventing my gripper from actuating?

1. Remove air lines from one port and pressurize the other. The seals are worn if air comes out of the open port. 2. Place light machine oil at the interface of the piston rod (if exposed) and look for bubbles. 3. Seal kits are available from the accessories section of the main catalog. Most grippers are field repairable.

Can bumpers be added to Destaco escapements?

Yes.

Can I adjust for wear and play in a gripper?

RP-10 and any of the Dual “V” roller bearing grippers can be adjusted to remove play.

Can I operate a gripper with only one air line?

Yes, use a spring loaded gripper. Actuate the air line to open or close the gripper and then exhaust and allow the jaws to go to their original state.

Can I use a pressure greater than that shown in the catalog?

Yes, but a RoboHand applications engineers should be consulted.

Can interference with other components cause a gripper to only partially actuate?

1. Check to see that the gripper doesn't hit any other machine components during its travel. 2. Check to see that particulate , machining chips or other debris isn't jamming the gripper.

Could a broken rack or pinion cause a gripper to only partially actuate?

If the gripper jaws can be moved by hand through part, but not the entire stroke, the rack or pinion may be broke. Both are available as repair parts from Destaco.

Could a short actuation time from a PLC cause a gripper to only partially actuate?

Review the PLC program to ensure that sequencing time doesn't exceed the actuation time in the gripper catalog.

Could low air pressure at the gripper cause it to only partially actuate?

1. Check the air pressure at the gripper. 2. Remove air lines from gripper and see if it can be actuated by hand. 3. Check to see if gripper can be actuated with a separate shop air line.

Could worn seals cause a gripper to only partially actuate?

1. Remove air lines from one port and pressurize the other. Seals are worn if air comes out of the open port. 2. Place light machine oil at the interface of the piston rod (if exposed) and look for bubbles. 3. Seal kits are available from the accessories section of the main catalog. Most grippers are field repairable.

Does Destaco offer a fixed jaw gripper?

Yes, the DPG Series has this as a standard option. Many grippers that can be made non-synchronous can be made to have fixed jaws as a special request.

Does Destaco offer a miniature gripper for very small parts?

Yes, the RPM Series.

Does Destaco offer non-synchronous grippers?

Yes - grippers that utilize rack and pinion.

How can I achieve accurate part measuring with a gripper?

The best way to gauge a part accurately is to mount a measuring type sensor between the fingers as close to the part as possible. This eliminates all accumulated errors that may be present in the gripper's components. The deflection of those components, especially the deflection of the fingers themselves.

How can I achieve long stroke in a short gripper?

Use the DPL Series gripper with side-by-side jaws.

How can I decrease actuation time?

1. Use only the stroke that you truly need. 2. Stroke can be shortened in a custom designed product if required.

How can I find Destaco’s Robohand seal kits?

Seal kits appear in the catalog along with the other accessories.

How can I get maximum stroke in a small gripper?

The DPL Series has very long stroke for a short body gripper by having the jaws side by side rather than in line with one another.

How can I reduce the weight of fingers on my grippers?

1. Consider aluminum fingers instead of steel. 2. Taper the fingers, so that more material is located at the jaw and less at the part.

How do I achieve higher grip force with a smaller gripper?

Use a spring loaded gripper and use the spring force to augment the air pressure force.

How do I safely disassemble a spring loaded gripper?

First, consult the maintenance section in the catalog for the gripper in question. Determine whether the gripper is spring open or closed. This determines which side of the piston the spring is on. Grippers with springs directly under the piston cap require the cap to be held in place as the retaining ring is removed.

How does a pneumatic gripper work?

In-general, for pneumatic grippers, compressed air acts on a piston, or pistons, generating a motion in the gripper’s jaws. The jaws have fingers mounted on them that contact the part.

How is grip force related to payload?

There is no direct correlation due to the different type of finger designs that may be used to hold a part. Different safety factors apply depending on the gripper finger design.

If a gripper actuates faster than normal, could the possible cause be that the air pressure is too high?

Yes. 1. Check the air pressure at the gripper. 2. Consult the product catalog for maximum allowable pressure.

If a gripper actuates faster than normal, could the possible cause be that the flow control has been adjusted?

Yes - adjust the flow control to decrease the flow rate to the gripper. Lock the flow control if it has this feature.

If a gripper actuates faster than normal, could the possible cause be that the flow control is faulty?

Yes - remove the flow control and bench test it or replace it.

If a gripper actuates in reverse operation, could the possible cause be an error in the PLC's program?

Yes - review PLC program.

If a gripper actuates in reverse operation, could the possible cause be an improperly wired valve?

Yes - check the wiring of the valve and the valve LED's when sequenced.

If a gripper actuates in reverse operation, could the possible cause be reversed air lines?

Yes - switch the air lines going to the gripper.

If a gripper actuates slower than normal, could the possible cause be a defective value?

Yes. 1. Remove the air lines from the gripper and see if it can be actuated by hand smoothly. 2. Check to see if the gripper can be actuated with a separate shop air line. 3. Check the valve that's connected to the gripper. 4. Check the valve's LED's during the process.

If a gripper actuates slower than normal, could the possible cause be that the air pressure is too low?

Yes. 1. Consult the product catalog for minimum air pressure requirements. 2. Check the air pressure at the gripper. 3. Check for leads, kinks, and breaks in the air lines.

If a gripper actuates slower than normal, could the possible cause be that the flow control has been adjusted?

Yes. 1. Adjust the flow control to increase the flow rate to the gripper. 2. Lock the flow control if it has this feature.

If a gripper actuates slower than normal, could the possible cause be that the flow control is faulty?

Yes - remove the flow control and bench test it or replace it.

If a gripper actuates slower than normal, could the possible cause be that the gripper is broken?

Yes - contact Destaco's customer service for warranty status, repair kits, and Destaco factory repair options.

If a gripper actuates slower than normal, could the possible cause be that the gripper requires maintenance?

Yes - consult the product catalog's maintenance section for repair instructions and diagrams. Contact us if the maintenance section that came with your product isn't available.

If a gripper actuates slower than normal, could the possible cause be that the pressurized air system is contaminated?

Yes. 1. look for particulate or water in the air lines. 2. Check that the air filter is clean.

If a gripper actuates slower than normal, could the possible cause be worn seals?

Yes. 1. Remove air lines from one port and pressurize the other. Seals are worn if air comes out of the open port. 2. Place light machine oil at the interface of the piston rod (if exposed) and look for bubbles. 3. Seal kits are available from the accessories section of the main catalog. Most grippers are field repairable.

If a gripper drop the part during motion, could the possible cause be a defective value?

Yes. 1. Remove the air lines from the gripper and see if it can be actuated by hand smoothly. 2. Check to see if the gripper can be actuated with a separate shop air lines. 3. Check the value connected to the gripper. 4. Check for value LED's during the process.

If a gripper drops the part during motion, could the possible cause be that the air pressure is too low?

Yes. 1. Consult the product's catalog maintenance section for repair instructions and diagrams. 2. Check the air pressure at the gripper. 3. Check for leaks, kinks, and breaks in the air lines.

If a gripper drops the part during motion, could the possible cause be that the gripper is broken?

Yes - contact Destaco's customer service for warranty status, repair kits, or Destaco factory repair options.

If a gripper drops the part during motion, could the possible cause be that the gripper requires maintenance?

Yes - consult the product's catalog maintenance section for repair instructions and diagrams. Contact us if the maintenance section that came with your product isn't available.

If a gripper drops the part during motion, could the possible cause be that the mechanism is contaminated?

Yes. 1. Inspect any openings in the gripper to see if particulate or debris has entered the gripper. 2. Check the catalog for application restrictions.

If a gripper drops the part during motion, could the possible cause be that the motion devices that the gripper is attached to have broken shock absorbers?

Yes - inspect the shock absorbers on the linear slides or rotary actuators that the gripper is mounted to.

If a gripper drops the part during motion, could the possible cause be that the motion devices that the gripper is attached to have had their speed increased?

Yes - reduce acceleration or deceleration of the robot or manufacturing machine that the gripper is mounted to.

If a gripper drops the part during motion, could the possible cause be that the pressurized air system is contaminated?

Yes. 1. Look for particulate or water in the air lines. 2. Check that the air filter is clean.

If a gripper drops the part during motion, could the possible cause be the new gripper was ordered with springs but assembled without springs?

Yes. 1. Check the part number on the gripper. 2. Determine whether it was ordered incorrectly or assembled incorrectly. 3. Return the gripper under warranty.

If a gripper has a lower grip force than normal, could the possible cause be a defective value?

Yes. 1. Remove the air lines from the gripper and see if it can be actuated by hand smoothly. 2. Check to see if the gripper can be actuated with a separate shop air line. 3. Check the valvue connected to the gripper. 4. Check for value LED's during the process.

If a gripper has a lower grip force than normal, could the possible cause be that the air pressure is too low?

Yes. 1. Check the product catalog for minimum air pressure requirements. 2. Check the air pressure at the gripper. 3. Check for leaks, kinks, and breaks in the air lines.

If a gripper has a lower grip force than normal, could the possible cause be that the gripper mechanism is contaminated?

Yes. 1. Inspect any openings in the gripper to see if particulate or debris has entered the gripper. 2. Check the catalog for application restrictions.

If a gripper has a lower grip force than normal, could the possible cause be that the pressurized air system is contaminated?

Yes. 1. Looks for particulate or water in the air lines. 2. Check that the air filter is clean.

If a gripper has a lower grip force than normal, could the possible cause be that the the gripper is missing springs? (assuming that it is a new gripper that was ordered with springs)

Yes - actuatue the gripper by hand, and if the spring force can't be felt, it may be missing springs. Return the gripper to Destaco if it is under warranty.

If a gripper has a lower grip force than normal, could the possible cause be worn seals?

Yes. 1. Remove air lines from one port and pressurize the other. 2. Place light machine oil at the interface of the piston rode, if it's exposed, and look for bubbles. 3. Seal kits are available from the accessories section of the main product catalog. Most grippers are field repairable.

If a gripper has a rough actuation, could the possible cause be a contamination in the gripper mechanism?

Yes. 1. Inspect any openings in the gripper to see if particulate or debris has entered the gripper. 2. Check the catalog for application restrictions.

If a gripper has a rough actuation, could the possible cause be a contamination in the preassurized air system?

Yes. 1. Look for particulate or water in the air lines. 2. Check that the air filter is clean.

If a gripper has a rough actuation, could the possible cause be a defective valve?

Yes. 1. Remove air lines from the gripper and see if it can be actuated by hand smoothly. 2. Check to see if the gripper can be actuated with a separate shop air line.

If a gripper has a rough actuation, could the possible cause be that the gripper is broken?

Yes - consult Destaco Customer Service for warranty status, repair kits, or Destaco factory repair options.

If a gripper has a rough actuation, could the possible cause be that the gripper require maintenance?

Yes - consult the catalog maintenance section for repair instructions and diagrams. Contact us if the maintenance section that came with your product isn't available.

If a gripper has erratic grip force, could the possible cause be that the air pressure is too low?

Yes. 1. Consult the product catalog for minimum air pressure requirements. 2. Check the air pressure at the gripper. 3. Check for leads, kinks, and breaks in the air lines.

If a gripper has erratic grip force, could the possible cause be that the air pressure system is contaminated?

Yes. 1. Look for particulate or water in the air lines. 2. Check that the air filter is clean.

If a gripper has erratic grip force, could the possible cause be that the gripper mechanism is contaminated?

Yes. 1. Inspect any openings in the gripper to see if particulate or debris has entered the gripper. 2. Check the catalog for application restrictions.

If a gripper has erratic grip force, could the possible cause be that the gripper requires maintenance?

Yes - consult the product's catalog maintenance section for repair instructions and diagrams.

If a gripper has erratic grip force, could the possible cause be worn seals?

Yes. 1. Remove the air lines from one port and pressurize the other. The seals are worn if air comes out of the open port. 2. Place light machine oil at the interface of the piston rode (if exposed) and look for bubbles. 3. Seal kits are available from the accessories section of the main product catalog. Most grippers are field repairable.

If a gripper has erratic grip force, could the possible cause that the gripper is broken?

Yes - consult Destaco Customer Service for warranty status, repair kits, or Destaco factory repair options.

If a gripper has more grip force than normal, could the possible cause be a defective value?

Yes. 1. Remove the air lines from the gripper and see if it can be actuated by hand smoothly. 2. Check to see if the gripper can be actuated with a separate shop air line.

If a gripper has more grip force than normal, could the possible cause be that flow control is required?

Yes. 1. Add a flow control to this port. 2. Flow controls are recommended for many applications.

If a gripper has more grip force than normal, could the possible cause be that the air pressure is too high?

Yes - check the air pressure at the gripper.

If a gripper has more grip force than normal, could the possible cause be that the flow control has been adjusted?

Yes - adjust the flow control to decrease the flow rate to the gripper. Lock the flow control if it has this feature.

If a gripper has more grip force than normal, could the possible cause be the gripper's springs? (assuming it is a new gripper that you ordered without springs)

Yes - actuate the gripper by hand. If the spring force can be felt, it may be a spring loaded gripper was ordered in error. Return the gripper to Destaco under warranty.

If a gripper is marking the part, could the possible cause be that flow control is required?

Yes - add a flow control to this port.

If a gripper is marking the part, could the possible cause be that the air pressure is too high?

Yes - check the air pressure at the gripper.

If a gripper is marking the part, could the possible cause be that the flow control has been adjusted?

Yes - adjust the flow control to decrease the flow rate to the gripper. Lock the flow control if it has this feature.

If a gripper is marking the part, could the possible cause be that there is damage to one of the fingers?

Yes - check the finger contact surface for damage.

If a gripper will not release the part, could the possible cause be a defective value?

Yes. 1. Remove the air lines from the gripper and see if it can be actuated by hand smoothly. 2. Check to see if the gripper can be actuated with a separate shop air line.

If a gripper will not release the part, could the possible cause be contamination in the pressurized air system?

Yes. 1. Look for particulate or water in the air lines. 2. Check that the air filter is clean.

If a gripper will not release the part, could the possible cause be no air pressure to the gripper?

Yes. 1. Remove the air lines from the gripper and see if it can be actuated by hand. 2. Check to see if the gripper can be actuated with a separate shop air line. 3. Check the valve connected to the gripper. 4. Check for valve LED's during process. 5. Check the air pressure at the gripper. 6. Check for leaks, kinks and breaks in the air lines. 7. Run a program cycle to see if air comes out of the removed airlines.

If a gripper will not release the part, could the possible cause be that the fingers are too long and causing jamming?

Yes - check the catalog to determine if the finger length is too long for the operating pressure.

If a gripper will not release the part, could the possible cause be that the gripper is broken?

Yes - consult the product catalog's maintenance section for repair instructions and diagrams. Contact us if the maintenance section that came with your product isn't available.

If a gripper will not release the part, could the possible cause be that the gripper is experiencing a spring loaded-related issue?

Yes. 1. Check to see if gripper can be actuated with a separate shop air line. 2. Check if the gripper returns to original position without use of air.

If a gripper will not release the part, could the possible cause be that the sensors are broken?

Yes. 1. Check for broken sensor wires. 2. Check that the sensor is plugged into the sensor cable properly.

If a gripper will not release the part, could the possible cause be that the sensors are not positioned properly?

Yes. 1. Actuate the gripper by hand to ends of stroke to see if sensor LED's light up. 2. Re-adjust the sensor's position until the sensor lights up.

If a gripper will not release the part, could the possible cause be that there's a fault in the PLC program?

Yes - review the PLC program.

If a gripper's jaw do not actuate synchronously, could the possible cause be that the gripper is broken?

Yes - consult Destaco Customer Service for warranty status, repair kits, or DESTACO factory repair options.

If a gripper's jaw do not actuate synchronously, could the possible cause be that the gripper was built nonsynchronous?

Yes - check the build label on the gripper and look for "-NS" designation.

If a part is not picked properly, could the possible cause be that the gripper has been dislodged?

Yes - check that the gripper and fingers are properly aligned with the part nest.

If a part is not picked properly, could the possible cause be that the sensor detects too early?

Yes - reposition the sensor to detect at full closed location.

If a part jams during insertion, could the possible cause be that the gripper fingers and jaw have developed "play"?

Yes. 1. Check that screws holding fingers to the jaw are tight. 2. On rolling bearing products, bearing proload can be adjusted. See the product's catalog maintenance section.

If a spring loaded gripper loses grip force, could the possible cause be that there's a broken spring?

Yes. 1. Check to see if the gripper can be actuated with a separate shop air line. 2. Check whether the gripper returns to its original position without use of air.

If an electric gripper is malfunctioning, could the possible cause a loose power cord?

Yes - check for breaks or disconnects in the power cord.

If an electric gripper is malfunctioning, could the possible cause be that the gripper is broken?

Yes - due to the complexity of electric grippers, consult Destaco's Technical Support prior to attempting any on-site repairs.

If I have a delicate part which type of gripper would work best?

Choose a gripper with a low operating pressure capabilities.

If my gripper doesn't actuate, does that mean it's broken?

Consult Destaco Customer Service for warranty status, repair kits, or Destaco factory repair options.

If the gripper is leaking air, could the possible cause be that the gripper is broken?

Yes - contact Destaco's Customer Service for warranty status, repair kits, or Destaco factory repair options.

If the gripper is leaking air, could the possible cause be that the gripper requires maintenance?

Yes - consult the catalog maintenance section for seal kits, repair instructions, and diagrams. Contact us if the maintenance section that came with your product isn't available.

If the gripper is leaking air, could the possible cause be worn seals?

Yes. 1. Remove the air lines from one port and pressurize the other. The seals are worn if air comes out of the open port. 2. Place light machine oil at the interface of the piston rod (if it's exposed) and look for bubbles. 3. Seal kits are available from the accessories section of the main catalog. Most grippers are field repairable.

If the sensor isn't detecting positions, could the possible cause be that the sensor is broken?

Yes. 1. Check for broken sensor wires. 2. Check that the sensor is plugged into the sensor cable properly. 3. Run a magnet past the sensor if it is magnetoresistive or place a piece of steel on the detection surface for inductive sensors.

If the sensor isn't detecting positions, could the possible cause be that the sensor isn't positioned properly?

Yes. 1. Actuate the gripper by hand to ends of stroke to see if sensor LED's light up. 2. Re-adjust the sensor's position until the sensor lights up.

If the sensor isn't detecting positions, could the possible cause be that the target magnet is in the wrong position? (when the gripper has been in use for some time)

Yes. 1. Slide the sensor in the slow the full length of the slot. 2. If no signal is detected, the magnet may have moved.

If the sensor isn't detecting positions, could the possible cause be that the target magnet is missing? (for new grippers)

Yes. 1. Slide the sensor in the slow the full length of the slot. 2. If no signal is detected, the gripper may be missing a magnet. 3. The gripper should be returned to Destaco if under warranty.

In electric gripping, what is “light switch” operation?

Simply signal either open or closed. No programming required.

Is a lack of air pressure preventing my gripper from actuating?

1. Remove the air lines from the gripper and see if it can be actuated by hand. 2. Check to see if the gripper can be actuated with a separate shop air line. 3. Check the valve connected to the gripper. 4. Check for valve LED's during process. 5. Check the air pressure at the gripper. 6. Check for leaks, kinks and breaks in the air lines. 7. Run program cycle to see if air comes out of the removed air lines.

Is an improperly placed sensor, or broken sensor, preventing my gripper from actuating?

1. Check for broken sensor wires. 2. Check that sensor is plugged into the sensor cable properly. 3. Actuate your gripper by hand to ends of stroke to see if your sensor's LED's light up. 4. Re-adjust the sensor's position until the sensor lights up.

Is it better to oversize or undersize a gripper in an application?

Over-sizing a gripper errors on the side of safety.

Is stroke determined by part size?

No, stroke is only required to get clearance to get the fingers around the part. Keeping stroke short keeps the gripper smaller, lighter and faster.

What advantage does a rolling bearing gripper have?

Lower friction, low pressure operation, higher grip force with long fingers and high stiffness (resistance to deflection).

What are some best practices for gripper fingers?

1. Set the grip part close to fully closed, but not completely closed. 2. Position the grip part as close to the gripper as possible to keep finger lengths short. 3. Consider how different materials for fingers affect performance. 4. Consider deflection and stiffness.

What are some best practices for gripping delicate parts?

1. Use a low friction gripper, like the RPL or DPP, at low air pressure. 2. Use a flow control on the close port to minimize finger impact on the part.

What are some best practices if a gripper is in a tight location?

1. Try slot-mounted sensors. 2. Utilize top manifold ports to eliminate the need for tubing and fittings that would stick-out of the gripper. 3. Shorten the stroke to reduce the full opening of the gripper.

What are some best practices in a friction gripping application?

1. Use a smaller gripper size. 2. Consider that the higher the friction, the smaller the required grip force. 3. By adding high friction urethane pads or a serrated surface to the fingers, grip force can be reduced.

What are some best practices to gripping large parts?

Depending upon the geometry of the part, it may make sense to use two smaller grippers rather than one large one.

What are the advantages of using a spring-loaded gripper?

There are two main advantages. The first is that the gripper can retain the part when air pressure is removed from the gripper. The second is that the spring can be used to increase the grip force of the gripper.

What are the types of grippers?

1. General industrial application 2. Clean room 3. Harsh environment 4. Long stroke 5. Large part 6. Small part 7. High precision 8. High temperature 9. Spring loaded 10. 2 and 3 jaw 11. Angular and parallel motion jaws 12. Electric

What can be done to increase finger friction with the part?

Addition of rubber or urethane pads on the finger.

What gripper is best for round parts?

Use the RTH Series, three jaw gripper.

What gripper is best for small parts?

Use the RPM Series gripper.

What gripper should I use if I can’t tolerate any “play” in the fingers?

A roller bearing gripper has zero side play. If play should develop and can be eliminated by resetting the device’s preload.

What is a mechanical gripper?

Any gripper that uses moving mechanical components to actuate fingers that contact and hold the part.

What is a sure way to break a gripper?

Using fingers that are too long.

What is the advantage of having more than 2 sensors on a gripper?

Two sensors can sense only two positions, however many gripper applications have three positions to be sensed; fully open, fully closed (part missing) and part present.

What is the difference between a precision application and a normal industrial application?

Precision applications require very accurate part placing or insertion. It is important to have excellent parallelism between jaws and body as well as excellent repeatability and zero side play.

What is the difference between a shielded gripper and a sealed gripper?

A shielded gripper has cover components that move close to one another without touching, minimizing the possibility of contaminants entering the gripper. A sealed gripper is cut off entirely from the exterior atmosphere.

What is the extended stroke lengths of Destaco’s Robohand RP series?

They vary from gripper to gripper. RP-19M has 50.8 mm of stroke.

What is the minimum information required to size a gripper?

Part weight, air pressure, gripper finger length.

What should I do with a part if pressure is lost on a gripper?

1. Keep the part in-between the fingers. 2. Use a spring closed gripper. 3. Use a "failsafe valve" OFSV accessory.

Which type of gripper is best for picking up round parts?

A three jaw gripper is normally recommended for a round part.

Why are clean room grippers usually also good for harsh environments?

The design of clean room grippers usually includes shielding and purge/scavenge ports. These features work well in either environment, where for clean operation, scavenge vacuum pressure draws air into the gripper’s internal mechanism, ensuring that contaminant’s from the mechanism don’t contaminate the clean room. In the case of dirty environments, the purge port is supplied with low air pressure that keeps dirt from the environment from entering the gripper.

Why is a spring loaded gripper only partially actuating?

1. Check to see if gripper can be actuated with a separate shop air line. 2. Check to see if pressure at the gripper is enough to overcome the spring force in the gripper.

Why is total grip force different from finger force?

Total grip force is a value used to compare one gripper to another in relative terms, but the value is not used for any other reason. Finger force depends upon finger length and air pressure and determines the size of the gripper for a specific application.

Why use an angular gripper instead of a parallel gripper?

Angular grippers are normally used in lower precision applications, or in applications that require lower cost.

Why won't my spring loaded gripper actuate?

1. Check to see if gripper can be actuated with a separate shop air line. 2. Check if the gripper returns to original position without use of air.

Why would I choose an electric gripper over a pneumatic gripper?

Electric grippers are perfect for application where compressed air isn’t available or is discouraged. Some electric grippers have extremely long maintenance free life. They are also many times more efficient from an energy standpoint with respect to pneumatic grippers.

Why would I use a non-synchronous gripper?

While applications are few, it allows the fingers to comply with the part’s center (in one axis only) rather than to the gripper’s center.

Will a gripper that only partially actuates signal that it is broken?

Consult Destaco Customer Service for warranty status, repair kits, or Destaco factory repair options.

Will a gripper that only partially actuates signal that it is in-need of maintenance?

Consult catalog maintenance section for repair instructions and diagrams. Contact us if the maintenace section that came with your product is unavailable.

How do Destaco’s self-centering grippers function and what are their benefits of self-centering?

There are several mechanisms employed in our grippers to not only center the jaws and fingers, and thus the part, but also synchronize their motion. The centering aspect ensures that from part to part, the position of the grip is always the same. Synchronization of the motion ensures that the part is not moved from its initial nested position when the jaws close. In some grippers, we offer a non-synchronized version where the jaws close independently as their friction allows them, and the part is gripped somewhere other than on the center line of the gripper. This is done when the pick location of the part may not be very precise.

Are Destaco’s grippers IP67/68 rated for submersion?

No - we don’t offer grippers with a rating higher than 66.

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