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BigMouth II™ BP Models

Self-contained pneumatic power chucks with big through hole

  • Built-in cylinder, no drawtube to reduce lathe spindle bore.
  • Big unobstructed through-hole
  • Adjustable grip force
  • Sizes 8” to 40”, through-holes to 22”
  • Easy-Mount design”, all models
    • Fully assemble on bench and bolt directly to adapter plate
    • No cumbersome chuck assembly on lathe spindle
  • New –  maintenance free non-return valve
  • Safer – allows pressure testing entire chuck including valves
  • New – Longer life Quad-ring seals on all dynamic surfaces
  • Full custom packages installed on your lathe by ATS world class Service Technicians
  • Two year warranty with ATS installation
  • Support by local ATS Service Technician through the life span of the chuck.

To purchase, or for more information

 

Big Mouth Dimensions

Standard Models for General Chucking Application

Chuck Model BP-200-52 BP-265-80 BP-315-105 BP-480-185 BP-500-230 BP-640-275 BP-800-375
Nominal Size 8” 10” 13” 19” 22” 25” 31”
Through Hole A 2.05 3.15 4.13 7.28 9.06 10.83 14.76
Face Diameter B 8.1 10.4 13.2 18.9 22.4 25.2 31.5
Rear Diameter C 11.8 14.6 14.6 20.9 22.4 27.0 33.5
Length D 5.3 5.8 6.2 8.8 8.8 10.3 12.0
Jaw Stroke/Jaw In. .165 .197 .197 .334 .334 .394 .472
Jaw Serration 1/16 x 90 1/16 x 90 1/16 x 90 3/32 x 90 3/32 x 90 3/32 x 90 3/32 x 90
Maximum Speed RPM 2800 2200 2200 1500 1300 1000 750
Max. Operating Pressure PSI 120 120 120 120 120 120 120
Grip Force @ 90 PSI Lbs. Total 13950 21400 19300 41860 44187 61600 61600

BT Series-Extended Jaw Stroke Models for Tubular Applications

Chuck Model BT 4.1 ES BT 7.3 ES BT 10.8 ES BT 12.8 ES BT 14.8 ES
Through Hole In. 4.13 7.28 10.82 12.80 14.76
Chuck Length In. 7.9 11.1 11.1 12.1 12.10
Jaw Stroke/Jaw In. 0.6 1.0 1.0 1.0 1.0
Jaw Serration 1/16 x 90 3/32 x 90 3/32 x 90 3/32 x 90 3/32 x 90
Swing Clearance In. 14.9 21.7 26.7 29.4 31.4
Maximum Speed RPM 2000 1300 1100 900 750
Normal Operating Pressure Range PSI 60-90 60-90 60-90 60-90 60-90
Max. Operating Pressure PSI 120 120 120 120 120
Weight Lbs. 220 500 700 1200 1300