Soft jaws

Jaw blanks

Cut sizes are the finished blank. The saw cut is carried on the bar line.

• Jaw blanks3 off

  85mm x 45mm x 38mm, Aluminium 6082

  Three jaws to a set.

• Bar to saw the blanks from0.26 m

  45mm x 38mm bar, Aluminium 6082

  Includes a 3mm saw cut per jaw.

• Blank mass1.18 kg

  Aluminium 6082 at 2.7 g/cm3

  Weighed before the grip pocket is machined out.

Machining

• Grip pocket, external1 off

  85mm diameter x 5mm deep, 33mm floor left, 28.4cm3 a set

  Counted once a set: the pocket is bored across the three jaws together, on the chuck they will run in.

• Material removed0.08 kg

  28.4cm3 a set

  From the swept cylinder of the workpiece, the same volume the machining price line charges.

Fixings

• Jaw bolts6 off

  To suit a 12mm hole at 30mm pitch, 18mm counterbore

  Two per jaw on the Kitagawa B-208 bolt pattern. A chuck is supplied with its own jaw bolts, so no thread or grade is specified here.

What this take-off assumes

• Jaws are supplied as a set of three, so one quantity is one set: 1 set, 3 jaws.
• Blank sizes, the bolt pitch and the bolt hole come from the chuck table entry for Kitagawa B-208.
• Blanks parted off with a 3mm saw cut per jaw, added to the bar or the plate they come out of and not to the finished jaw.
• Machining volume is taken as the swept cylinder of the workpiece, 85mm diameter over 5mm of grip depth. It is the same approximation the machining price line uses.
• Material Aluminium 6082 at 2.7 g/cm3 from the material table.
• This is a take-off and a quote. Whether the jaws hold the workpiece through the cut depends on the clamping force, the serration and the machine, and is not checked here.

Stock that covers this size

The stock below is the example list the preset ships with. Load your own and the take-off matches against what you actually hold.

• Aluminium 6082 jaw blank set 90 x 50 x 40mm (example)£14.80 / set

  Covers the size, 81 per cent of the stock used

• Aluminium 6082 jaw blank set 105 x 60 x 50mm (example)£21.70 / set

  Covers the size, 46 per cent of the stock used

• Aluminium 6082 jaw blank set 70 x 40 x 35mm (example)£9.60 / set

  Too small for this size, 100 per cent of the stock used