Clamp Maintenance and Inspection by Users, Corporate website of Eagle Clamp Co., Ltd.

Maintenance Key Points Inspection Criteria Inspection Procedure Importance of Regular Inspections

Maintenance Key Points

Clamp maintenance and inspection help achieve zero accidents.
Following appropriate maintenance and inspection practices improves work efficiency and achieves lower total costs by preserving clamp life.

Store indoors by application

To prevent rust, do not leave clamps outdoors after use.
To improve work efficiency, store clamps together by application.

Inspect and Maintain Regularly

Be sure to inspect before operation and to maintain after operation.
Inspect and maintain regularly, even if the clamp is not used (around once a month).
When inspecting or maintaining, apply oil to the sliding parts.

Never Use Damaged or Deteriorated Clamps

If any deformation, damage, or deterioration is found in the clamp, do not use it and replace it with one that has no defects.
Always inspect clamps before operation.

Replace Parts Early

Using clamp parts near their wear limit is risky.
In environments with hard loads or uniform plate thickness, replace cams (toothed plates) and swivel jaws earlier than usual.

Inspection Criteria

The following table provides references for clamp inspection.
If any listed condition is found, stop using the clamp and contact us.

Inspection Criteria Table (Excerpt)

Inspection Location		Inspection Items	Inspection Procedure and Check Points	Usage Limits (Replace or Discard Items That Exceed the Limits)
Main Body		Deformation or Cracks	・The lifting shackle is difficult to move under no load. ・The clearance between the main body and the link has either widened or narrowed. ・The opening has widened or shows wear. ・The guide groove for the lifting shackle pin is worn or deformed.
Main Body Bolt		Bent Bolts	・Looseness or play is found when bolts are tightened.
Main Body Pin		Bent Pins or Welding Defects	・Any deformation of the main body or cracks in welded areas (even a single instance)
Lifting Shackle		Bending, Twisting, or Elongation	・When the lock device is locked, more than 2 mm of vertical play is observed (elongation).	Do not use the shackle if any of the following conditions are found: ・Bending over 10° ・Elongation or wear over 5% ・Twisting
Cam (Toothed Plate)		Wearing, Clogging, or chipping in the Teeth	・The cam teeth do not leave marks on the load. ・Do not use the clamp if chipping is observed in the cam teeth.
Cam Pin or Lifting Shackle Pin		Bending	・The cam shows runout when the cam pin is rotated.
Cam Pin or Lifting Shackle Pin		Wear	・Looseness or play in the lifting shackle or cam
Swivel Jaw		Wearing, Clogging, or chips in the Teeth	・Do not use the clamp if chipping is observed in the outer teeth. ・Clogging with coating material is not acceptable. ・Do not use the clamp if chipping is observed in the outer teeth.
Cam Pin Hole or Lifting Shackle Pin Hole		Elongation, Wear, or Deformation	・Looseness or play in the lifting shackle or cam
Lock Device	Lock Spring	Elongation, Deformation, or Loss of Spring Tension	・Loss of spring tension or easy unlocking when the lock device is locked with the opening in the closed position and no load. ・If the lock device does not work properly when the load is inserted, do not use the clamp.
	Set Bolt	Wear, Deformation, or Elongation	・Even after replacing the spring, the spring tension is weak and the lock device can be easily unlocked
	Bolt Hole	Wear, Deformation, or Elongation

※This table applies only to cam-type clamps. For other products, refer to the relevant instruction manual.

Inspection Procedure

Each product has its own inspection procedure. Always follow the inspection procedure described in the instruction manual provided with the product.
For some models, the following are checklists and inspection location tables for inspection before operation. Please refer to them.
Note: These checklists and tables are updated periodically.

Item

Checklist for Inspection before Operation

Inspection Location Table

Clamps for Steel

For Vertical Lifting

Checklist for Inspection before

Inspection Location Table

PDF File

For Lateral Lifting

Checklist for Inspection before

Inspection Location Table

PDF File

Screw Type

Checklist for Inspection before

Inspection Location Table

PDF File

Importance of Regular Inspections

Please use clamps properly, and inspect them before operation and at regular intervals to ensure safety.
Inspection guidelines are provided to help prevent accidents.

Inspection Before Operation (Daily Inspection)

The user or owner must inspect before operation.

Periodic Inspection

A qualified professional should visually and functionally inspect the clamp.
If no abnormalities are found, the clamp may be labeled “Inspected.”
If necessary, disassemble the clamp and inspect the parts.
Maintain or replace parts, or send the clamp to the manufacturer (or an approved servicer) for repair.
The inspector must record and keep the inspection date and details of the inspection and any repairs.
Please refer to the separate “Replacement Criteria” table for part replacement standards.

Please Register Your Clamps

To use your clamps safely over the long term, please register each unit and have it inspected periodically until disposal.
For proper maintenance and our appropriate support, we request user registration for all our products.

Please let us know the name of your dealer and the serial number listed on the "Certificate of Inspection and Test" at export@eagleclamp.co.jp.