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Air Powered Front Mount B42 Dead Length Collet Chucks

No Draw-Tube or Air Feed Tubes Required: for Lathes, Rotary Tables and Grinders: Series ATL207-B42

  • No Hydraulic System Required
  • No Draw Tube or Air Feed Tubes Restricting Spindle Bore
  • No Rear Cylinders and Cylinder Adapters
  • Low Cost
  • Easily Convert any Lathe or Grinder into a Production Machine
  • Ideal for Rotary Table Applications
  • Change from Collet Chuck to Standard Chuck Quick and Easy
  • High Speed 2500 RPM
  • High Accuracy Less Than .001” TIR
  • Repeats on Duplicate Parts Plus Minus .00015”
  • Dead Length Design
  • For Best Accuracy Use High Quality Crawford Collets
  • Lever or Foot Pedal Actuated
  • Low Maintenance with Oil Mist Lubrication System
  • High Resistance to Coolant and Chip Penetration
  • Uses B42 Collets, Range 1/16″ (1mm) to 1-5/8″ (42.5mm)
  • Available in A, D, L, 4 Degree, Threaded and Straight Recess Mounting
 Collet ChuckATL207-B42SpecificationsATL207-B42
Collet Chuck Order No. with Mount:
ATL207-B42
A196mm (7.72")Screw Hole Dia11mm (0.43") x 3 - M10 xP1.5 x 3
B155mm (6.10")Collet TypeB42 Collets
Straight Recess Mount
Type A Mount
ATL207-B42A5
ATL207-B42A6
ATL207-B42A8
C42mm (1.65")Max. RPM2500
D5mm (0.20")Sleeve Stroke4mm (0.16")
Type D Mount
ATL207-B42D4
ATL207-B42D5
ATL207-B42D6
ATL207-B42D8
E136mm (5.35")Air Pressure3-8 kg/cm2 (42-114 psi)
F75mm (2.95")Through Hole Dia42mm (1.65")
Other Mounts
ATL207-B4244-4°-Taper
ATL207-B4245-23⁄16-10
ATL207-B4246-23⁄8-6
G150mm (5.92")Chuck Weight16kg (35.2lbs)
H172mm (6.77")Grip Force13,000 lbs @ 100 PSI
Collet Chuck Supplied with:
• 2 Filter Bars
• 2 Air Hoses
• 1 Fixing Bracket for Hoses
• 1 Hex Key
• Mounting Bolts
• Users Manual
NOTE: “E” shown is for model ATL207-B42 Collet Chuck with no mounting plate.
Add 3/4" to the “E” dimension for mounting plate. This will vary slightly depending on the mounting required. If an exact “E” dimension is required, consult factory.
OPTIONS: Order No: LEV100 Lever Control Package: (Includes: Lever Control, Line Filter, Lubricator and regulator.)
Order No: FOT200 Foot Pedal Control Package: (Includes: Foot Pedal, Line Filter, Lubricator and regulator.)