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Master Steel Standard Soft Top Jaws for 5" Chucks

• Set of 3  Jaws - Steel Soft
• 1.5mm x 60 deg. Standard serrations
• Fits most 5 in. dia. chucks with 1.5x60 deg serrated base jaws
• Groove Width: 10 mm  /  0.39 in
• Screw size: M8 with 14 mm / .55 in hole spacing
• Material: S45C Steel

Dimensions :  See Illustration

• Length :  62 mm (2.44 in)
• Width : 23 mm (0.91 in)
• Height: 27 mm (1.06 in)
• Groove Width : 10 mm (0.39 in)
• Groove Depth : 4 mm (0.16 in)
• Screw C'Bore Depth : 17 mm (0.67 in)
• Screw Spacing : 14 mm (0.55 in)
• Screw Hole to Jaw Tip : 38 mm (1.5 in)
• Screw Size : M8
• Serration Pitch : 1.5 x 60
• Weight : 0.7 kg (1.55 lbs)

Master Jaw Boring Ring 5" JB Type

The Master Jaw Boring Rings JB-type is essential for concentrically boring soft jaws.  No need to look all over the shop for a setup piece and wasting time. 

Features : Master Jaw Boring Rings 5" JB Type

• Ideal for machining soft jaws.
• Attaches quickly without tools.
• Applies equal pressure on all jaws.
• Attaches to front of jaws, compensating for “jaw lift.”
• Since no discs  are used to clamp jaws, through boring of jaws is possib

Jaw Boring Rings 5" JB Type Dimensions - see Dimension Illustration

• A : 12 mm (0.47 inch)
• B : 140 mm (5.51 inch) 
• C : 60 mm (2.36 inch)
• D : 12 mm (0.47 inch)
• E : 28 mm (1.10 inch)
• F : 9 mm (0.35 inch)
• G : 13 mm (0.51 inch)
• Weight : 1.2 kg (2.65 lbs)

Easy Installation Procedure : 

1. Place the jaw boring ring over  your chuck and locate the boring  ring pins in the counterbore 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 bore