The risk of uncontrolled reversing of the conveyor is eliminated in the event of a motor or gearbox breakdown by installing an S-A Holdback. For maximum reliability, the Holdback is fitted directly onto the shaft of the drive pulley.

Designed for economic and dependable operation, the S-A Holdback gives effective protection against injuries to persons, flooded loading stations and ruined equipment as a result of belt reversal or caused by belt reversal.

Torque-Master
  • Rebuildable in the field
  • Engages instantly without shock
  • Independently energized rollers compensate for wear
  • Reliable lip-type seals
  • Low-maintenance lubrication system
  • Universal mounting
  • Simple, functional design
  • Designed for long life

Not to be used on equipment that moves people or in indexing applications.

Dimensions for reference only and are subject to change without notice. Contact us for Certified Dimension Prints.
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Item #

Model

Bore Size

Min. Bore

Max. Bore

Revolutions

Torque

Weight

55-400-003-505 N/A HD215 N/A 2 7/16 in N/A 1 15/16 in N/A 2 15/16 in N/A 220 rpm N/A 40000 in·lb N/A 125 lb
55-400-004-505 N/A HD215 N/A 2 15/16 in N/A 1 15/16 in N/A 2 15/16 in N/A 220 rpm N/A 40000 in·lb N/A 125 lb
55-400-020-505 N/A HD315 N/A 2 15/16 in N/A 2 15/16 in N/A 3 15/16 in N/A 180 rpm N/A 80000 in·lb N/A 180 lb
55-400-005-505 N/A HD315 N/A 3 7/16 in N/A 2 15/16 in N/A 3 15/16 in N/A 180 rpm N/A 80000 in·lb N/A 180 lb
55-400-006-505 N/A HD315 N/A 3 15/16 in N/A 2 15/16 in N/A 3 15/16 in N/A 180 rpm N/A 80000 in·lb N/A 180 lb
55-400-007-505 N/A HD415 N/A 3 15/16 in N/A 3 15/16 in N/A 4 15/16 in N/A 145 rpm N/A 140000 in·lb N/A 290 lb
55-400-008-505 N/A HD415 N/A 4 7/16 in N/A 3 15/16 in N/A 4 15/16 in N/A 145 rpm N/A 140000 in·lb N/A 290 lb
55-400-009-505 N/A HD415 N/A 4 15/16 in N/A 3 15/16 in N/A 4 15/16 in N/A 145 rpm N/A 140000 in·lb N/A 290 lb
55-400-021-505 N/A HD600 N/A 4 7/16 in N/A 4 7/16 in N/A 6 in N/A 120 rpm N/A 250000 in·lb N/A 520 lb
55-400-011-505 N/A HD600 N/A 5 7/16 in N/A 4 7/16 in N/A 6 in N/A 120 rpm N/A 250000 in·lb N/A 520 lb
55-400-012-505 N/A HD600 N/A 5 15/16 in N/A 4 7/16 in N/A 6 in N/A 120 rpm N/A 250000 in·lb N/A 520 lb
55-400-030-505 N/A HD700 N/A 5 7/16 in N/A 4 15/16 in N/A 7 in N/A 110 rpm N/A 325000 in·lb N/A 660 lb
55-400-033-505 N/A HD700 N/A 5 15/16 in N/A 4 15/16 in N/A 7 in N/A 110 rpm N/A 325000 in·lb N/A 660 lb
55-400-034-505 N/A HD700 N/A 6 in N/A 4 15/16 in N/A 7 in N/A 110 rpm N/A 325000 in·lb N/A 660 lb
55-400-035-505 N/A HD700 N/A 6 1/2 in N/A 4 15/16 in N/A 7 in N/A 110 rpm N/A 325000 in·lb N/A 660 lb
55-400-031-505 N/A HD700 N/A 7 in N/A 4 15/16 in N/A 7 in N/A 110 rpm N/A 325000 in·lb N/A 660 lb
55-400-037-505 N/A HD800 N/A 7 in N/A 5 15/16 in N/A 8 in N/A 85 rpm N/A 550000 in·lb N/A 970 lb
55-400-038-505 N/A HD800 N/A 7 1/2 in N/A 5 15/16 in N/A 8 in N/A 85 rpm N/A 550000 in·lb N/A 970 lb
55-400-039-505 N/A HD800 N/A 8 in N/A 5 15/16 in N/A 8 in N/A 85 rpm N/A 550000 in·lb N/A 970 lb
55-400-042-505 N/A HD900 N/A 8 in N/A 7 in N/A 9 in N/A 75 rpm N/A 800000 in·lb N/A 1300 lb
55-400-043-505 N/A HD900 N/A 8 1/2 in N/A 7 in N/A 9 in N/A 75 rpm N/A 800000 in·lb N/A 1300 lb
55-400-044-505 N/A HD900 N/A 9 in N/A 7 in N/A 9 in N/A 75 rpm N/A 800000 in·lb N/A 1300 lb
55-400-046-505 N/A HD1000 N/A 9 in N/A 8 in N/A 10 in N/A 70 rpm N/A 110000 in·lb N/A 1720 lb
55-400-047-505 N/A HD1000 N/A 9 1/2 in N/A 8 in N/A 10 in N/A 70 rpm N/A 110000 in·lb N/A 1720 lb
55-400-022-505 N/A HD1000 N/A 10 in N/A 8 in N/A 10 in N/A 70 rpm N/A 110000 in·lb N/A 1720 lb
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