Kopal® Mono-Bloc Clamps

Measurements Available: Inch

Kopal Mono-Bloc Clamp

Kopal Mono-Bloc Clamps

The Mono-bloc clamp is the quickest and easiest way to clamp parts on a Bridgeport-type mill.

One of the fastest and strongest milling clamps available anywhere
Modular design: Start with two clamps and build with tiers
Clamps are easily set up and broken down, making them ideal for odd-shaped parts and short cycle times.
Worm-and-gear design ensures that the clamp will not loosen with use
Up to 13" clamping height with riser blocks

Click here to view complete line of Mono-Bloc style clamps. (Requires Adobe Acrobat Reader.) Allow several weeks for delivery, as these items are not stocked. Customer may be responsible for shipping charges on rush orders. Call for details.

With Regular Arm

  • Clamping Range 0-4"
  • 3,500 lbs. damping force when tightened to a torque of 59 ft lbs.

With Extension Arm

  • Clamping Range 0-5 1/2"
  • 1,900 lbs. damping force when tightened to a torque of 59 ft lbs.
Precision Worm & Gear Mechanism
When holding the workpiece, the worm can turn the gear but the gear cannot turn the worm. Thus, the clamp cannot loosen.
#1 Swivel Shoe
Light alloy swivel shoe provides protection against marring workpiece. The shoe is removable and free to swivel. It is secured by spring-loaded balls. A variety of shoes are available.
8mm hex ball is used to tighten Mono-Bloc to riser or to table. The socket is used to clamp workpiece. Red comfort-grip handle.

How the Mono-Bloc Clamps Work

  1. Slide T-nut and screw into approximate position. Slide riser block (or Mono-Bloc) over M10 screw. Tighten M10 screw through opening in riser block with T-wrench.
  2. Slide Standard-Duty Mono-Bloc over M10 screw on riser block.
  3. Tighten M10 screw on riser block with T-wrench through clearance on Mono-Bloc.
  4. Clamp the part. Range is 3″ to 6″. Add up to three riser blocks toclamp parts up to 12″ high.

Standard Duty Mono-Bloc Clamps

Part Number Description  
25705 Standard-Duty Mono-Bloc w/ 2 5/8″ Arm
(includes T-wrench)
25710 Standard-Duty Riser Block CAD
25515 Replacement Swivel Shoe CAD
25720 T-Wrench for Standard-Duty Mono-Bloc CAD
25540 Extension Arm CAD
25310 Worm Drive  

Deluxe Mono-Bloc Start-Up Kit

Part Number T-Slot Size
25725 1/2″
25727 9/16″
25729 5/8″
25731 3/4″

Special Screws & T-Nuts for Mono-Bloc

Part Number Description  
25730 M-10 x 35mm Screw for 9/16″ T-Nut CAD
25733 M-10 x 40mm Screw for 5/8″ & 3/4″ T-Nut CAD
25736 M-10 x 45mm Screw for 13/16″ & 7/8″ T-Nut CAD
25748 9/16″ x M-10 T-Nut CAD
25751 5/8″ x M-10 T-Nut CAD
25754 3/4″ x M-10 T-Nut CAD
25757 13/16″ x M-10 T-Nut CAD
25760 7/8″ x M-10 T-Nut CAD

Contents of Starter Kit

Part Number Description  
25705 2 Standard-Duty Mono-Blocs w 2 5/8″ Arm CAD
25710 2 Standard-Duty Riser Blocks CAD
25540 1 Extension Arm CAD
25720 1 Standard-Duty T-Wrench CAD
25730 2 M-10 x 35mm Screws CAD
25733 2 M-10 x 40mm Screws CAD  
Kit includes high-impact plastic storage/carrying case with room to store above tools and space to store additional T-nuts for other size mills.

Replacement Swivel Shoes

Shoes #2 & 3 give you a larger clamping surface –
Shoes # 4 & 5 are for holding round work pieces.
Part Number Model
25518 #2
25520 #3
25522 #4
25524 #5
25530 Set of 4 (#2, 3, 4, 5)


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