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Pratt Burnerd/Atlas Air Powered Front Mount 42BZI & 65BZI Pull Back QUICK CHANGE Collet Chucks
PRATATLAS BZI FRONT MOUNT COLLET CHUCK_e

ATL207-42BZI    & ATL208-65BZI

  • ALL COMPETITOR QUICK CHANGE COLLETS WILL WORK

  • 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

  • Pull Back Design

  • For Best Accuracy Use High Quality CRAWFORD BZI QUICK CHANGE COLLETS

  • Lever or Foot Pedal Actuated

  • Low Maintenance with Oil Mist Lubrication System

  • High Resistance to Coolant and Chip Penetration

  • Uses 42BZI Quick Change Collets, Range 1/16″ (1mm) to 1-5/8″ (42mm)

  • Uses 65BZI Quick Change Collets, Range 1/16″ (1mm) to 2-17/32″ (65mm)

  • Available in A, D, L, 4 Degree, Threaded and Straight Recess Mounting

Collet Chuck Order Number with Mount:
Mounting bolt - circle
172mm (6.77")
Screw Hole/ MTG bolts
11mm (0.43") x 3 - M10 xP1.5 x 3
ATL207-42BZI
Recess cavity diameter
155mm (6.10")
Collet Type
42BZI Collets (Quick Change)
Straight Recess Mount
Thru-Hole
42mm (1.65")
Max. RPM
2500
Type A Mount
ATL207-42BZIA5
ATL207-42BZIA6
ATL207-42BZIA8
Recess cavity depth
4.5mm (0.18")
Max Collet Jaw Stroke*
+0.6mm (.0236") / -2.0mm (.0787")
Type D Mount
Overall length
147.2mm (5.795")
Air Pressure
3-8 kg/cm2 (42-114 psi)
ATL207-42BZID4
ATL207-42BZID5
ATL207-42BZID6
ATL207-42BZID8
Chuck nose length
70mm (2.756")
Through Hole Dia
42mm (1.65")
Other Mounts
Chuck nose diameter
146mm (5.748")
Chuck Weight
20kg (44 lbs.)
ATL207-42BZI44-4�-Taper
ATL207-B4245-2-3?16-10
ATL207-42BZI46-2-3?8-6
Mounting bolt circle
172mm (6.77")
Grip Force
12,284 lbf @ 100 PSI
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