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Medium Air Clutches

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Contact Twin Disc for Survey Society Approvals and Classifications. Specifications subject to change without prior notice in the interest of continual product improvement.

  • Available in 1, 2 or 3 plate construction
  • Molded non-asbestos gear-tooth driving plates
    furnished as standard
  • Ample diaphragm travel eliminates need for
    wear adjustment
  • Cartridge-type diaphragm assembly eliminates leakage problems
  • Insulator plate shields diaphragm from source of heat
  • Diaphragm formed from neoprene reinforced with nylon
  • Threaded nut provides quick disassembly
  • Generous release springs provide fast, positive release

MEDIUM AIR CLUTCH CAPACITY DATA

Clutch
Model
Work Torque
N-m (lb-ft)
Max. Slip Torque @ 130 PSI
N-m (lb-ft)
Max. Safe Operating Speed - Solid Plates
RPM
PO-108 526 (388) 702 (518) 3600
PO-208 1068 (788) 1406 (1037) 4200
PO-308 1581 (1166) 2108 (1555) 4250
PO-110 892 (658) 1189 (877) 3100
PO-210 1786 (1317) 2381 (1756) 3600
PO-310 2678 (1975) 3570 (2633) 3650
PO-111 1569 (1157) 2092 (1543) 2850
PO-211 3137 (2314) 4183 (3085) 2850
PO-311 4706 (3471) 6275 (4628) 3250

For best clutch performance when used as:
Master or Operating Clutch – limit use to 75% of maximum input torque and derate for apply pressures less than 130 psi.

Maximum Speeds – The maximum speeds listed in this bulletin are safe permissible speeds possible with cast iron driving rings. The driving ring is normally the most critical member because it has the largest diameter. It should be remembered that the maximum speed listed is usually set considerably above the desired operating speed in the average installation.

For more information, download product bulletin.

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