Master Standard Soft Top Jaws AND Boring Ring

includes 3 sets of Soft Steel Jaws and one JB type jaw boring ring

• 3 Sets of 3 Soft  Jaws for 8" dia. chucks
• 1.5mm x 60 deg. Standard serrations
• Fits most 8 in. or 200 mm dia. chucks with 1.5x60 deg serrated base jaws
• Groove Width: 14mm  /  .55 in
• Screw size: M12 with 25 mm / .98 in hole spacing
• Material: S45C Steel

Dimensions :  See Illustration

• Length :  95 mm (3.74 in)
• Width : 35 mm (1.38 in)
• Height: 37 mm (1.46 in)
• Groove Width : 14 mm (0.55 in)
• Groove Depth : 5 mm (0.20 in)
• Screw C'Bore Depth : 22 mm (0.87 in)
• Screw Spacing : 25 mm (0.98 in)
• Screw Hole to Jaw Tip : 46 mm (1.81 in)
• Screw Size : M12
• Serration Pitch : 1.5 x 60
• Weight : 2.5 kg (5.51 lbs) per set of jaws

Master Jaw Boring Rings 8" JB Type

The Master Jaw Boring Rings JB-type is suitable for CNC lathe chucks where boring soft jaws is required to maintain  high part accuracy during machining . The Master Jaw Boring Ring saves operator set-up time and simplifies the overall jaw boring process.

Features : 

• For machining soft jaws.
• Attaches quickly to chuck without additional tools.
• Applies equal pressure on all jaws.
• Attaches to front of jaws, compensating for “jaw lift.”
• Provides for  through boring of jaws without  ‘ring’ interference.

Jaw Boring Rings 8" JB Type Dimensions - please refer to the Illustration above

• A : 12 mm (0.47 inch)
• B : 218 mm (8.58 inch) 
• C : 115 mm (4.53 inch)
• D : 15 mm (0.59 inch)
• E : 36 mm (1.42 inch)
• F : 9 mm (0.35 inch)
• G : 18.5 mm (0.73 inch)
• Weight : 2.4 kg (5.29 lbs)

Easy Installation Procedure : 

1. Place the jaw boring ring on chuck and locating the boring ring pins inthe screw counterbores of your chuck jaws. 
   2. Turn the jaw boring ring  until snug. 
   3. Activate your jaws. The jaw boring ring will apply equal pressure on all jaws, allowing for a consistent, concentric bore.

for other sizes or for volume purchases, please visit our website