The PL5FF (free fall) by Pullmaster is a stainless steel, high performance planetary winch with a max pulling capacity of 4,500 lbs. Pullmaster hydraulic planetary winches with Free Fall enable operators to lift and lower loads at controlled speeds or lower at high velocities when necessary.
Performance specifications are based on standard hydraulic motor, gear ratio and cable drum with 7/16 inch diameter wire rope. See APPENDIX A for performance of available options. | |
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CABLE DRUM DIMENSIONS (STANDARD DRUM) | |
Barrel Diameter 7.38 in 187 mm | |
Flange Diameter 11.00 in 279 mm | |
Barrel Length 6.56 in 167 mm | |
CABLE STORAGE CAPACITY | |
Size of wire rope 1/4 in 348 ft 106 m | |
5/16 in 218 ft 67 m | |
3/8 in 157 ft 48 m | |
7/16 in 110 ft 34 m | |
1/2 in 100 ft 31 m | |
MAXIMUM OPERATING PRESSURE | 2100 psi 145 bar |
MAXIMUM OPERATING VOLUME | 24 (US) gpm 91 l/min |
MINIMUM OPERATING VOLUME | 6 (US) gpm 23 l/min |
DRUM TORQUE AT MAXIMUM PRESSURE | 17,578 lb-in 1986 Nm |
DRUM RPM AT MAXIMUM VOLUME | 66 rpm |
LINE PULL AT MAXIMUM PRESSURE | |
Bare drum 4500 lb 20.0 kN | |
Full drum 3328 lb 14.8 kN | |
LINE SPEED AT MAXIMUM VOLUME | |
Bare drum 135 fpm 41 m/min | |
Full drum 183 fpm 56 m/min | |
PERMISSIBLE SYSTEM BACK PRESSURE | |
AT MOTOR RETURN PORT | 65 psi 4.5 bar |
PERMISSIBLE PRESSURE IN BRAKE HOUSING | |
(GAUGED AT SAFETY VALVE PORT) | 100 psi 7 bar |
PERMISSIBLE PRESSURE | |
AT FREE FALL CIRCULATION SUPPLY PORT | 10 psi 0.7 bar |
LUBRICATING OIL | Volume required (-1 drum) |
Volume required (-6 drum) | 0.5 (US) gal (1.9 litre) |