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4HWF

Thern Power Winches

Model 4HWF Power Winches from Thern

  Models

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Model Load Rating (lb) Line Speed (fpm) Motor Codes1 Horsepower Load Rating Line Speed
1st Layer Mid Drum Full Drum 1st Layer Full Drum
(lb) (kg) (lb) (kg) (lb) (kg) (fpm) (mpm) (fpm) (mpm)
4HWF1M 1500 25 D, E, F 1.5 1,500 681 900 409 700 318 23 7.0 52 15.8
4HWF1M 1500 35 D, E, F 2 1,500 681 900 409 700 318 32 9.8 73 22.3
4HWF2M 2000 25 D, E, F 2 2,200 998 1,500 681 1,200 545 22 6.7 40 12.2
4HWF2M 2000 35 D, E, F 3 2,200 998 1,500 681 1,200 545 34 10.4 63 19.2
4HWF4M 4000 25 D, E, F 3 4,000 1,815 2,500 1,134 1,800 817 21 6.4 47 14.3
4HWF4M 4000 35 D, E, F 5 4,000 1,815 2,500 1,134 1,800 817 35 10.7 78 23.8
4HWF6M 6000 25 D, E, F 5 6,000 2,722 4,400 1,996 3,400 1,543 24 7.3 42 12.8
4HWF6M 6000 35 D, E, F 7.5 6,000 2,722 4,400 1,996 3,400 1,543 35 10.7 61 18.6
4HWF8M 8000 25 D, E, F 7.5 8,100 3,675 5,800 2,631 4,500 2,042 27 8.2 47 14.3
4HWF8M 8000 35 D, E, F 10 8,100 3,675 5,800 2,631 4,500 2,042 39 11.9 64 19.5

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1Motor Codes
D 230 Volt / 3 Phase
E 460 Volt / 3 Phase
F Ask your mdi sales representative about other voltages

Read about Thern's 2-year Limited Warranty


Drum Capacities

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Wire Rope Dia. Breaking Strength2 Drum Capacity 4HWF1M 4HWF2M 4HWF4M 4HWF6M 4HWF8M
in mm lb kg   ft m ft m ft m ft m ft m
1/4 6.4 7,0003 3175 1st 43 13.1 51 15.5
Mid 370 112.8 340 103.6
Full 830 253 750 228.6
5/16 7.9 9,8003 4445 1st 34 10.4 41 12.5 87 26.5
Mid 250 76.2 230 70.1 950 289.6
Full 560 170.7 500 152.4 2,120 646.2
3/8 9.7 15,100 6849 1st 27 8.2 33 10.1 70 21.3
Mid 180 54.9 160 48.8 680 207.3
Full 400 121.9 360 109.7 1,520 463.3
7/16 11.2 20,400 9254 1st 23 7.0 28 8.5 60 18.3 76 23.2
Mid 130 39.6 120 36.6 510 155.4 450 137.2
Full 300 91.4 270 82.3 1140 347.5 990 301.8
1/2 12.7 26,600 12,066 1st 52 15.8 66 20.1
Mid 400 121.9 350 106.7
Full 890 271.3 770 234.7
9/16 14.2 33,600 15,240 1st 46 14.0 58 17.7 89 27.1
Mid 320 97.5 280 85.3 540 164.6
Full 710 216.4 620 189 1210 368.8
5/8 16.0 41,200 18,688 1st 51 15.5 78 23.8
Mid 230 70.1 440 134.1
Full 510 155.4 990 301.8
3/4 19.1 58,800 26,671 1st 42 12.8 65 19.8
Mid 160 48.8 310 94.5
Full 360 109.7 700 213.4
7/8 22.4 79,600 36,106 1st 54 16.5
Mid 230 70.1
Full 500 152.4
1 25.4 103,400 46,902 1st 47 14.3
Mid 180 54.9
Full 390 118.9

2 Values based on 6x37 IWRC EIPS wire rope.
3 Values based on 7x19 galvanized aircraft cable.
Actual drum capacities 25-30% less, due to nonuniform winding. Wire rope tension will also affect drum capacity.
Wire rope should be selected based on the breaking strength to load rating ratio and application parameters. Industry standards suggest a 5:1 breaking strength to load rating ratio for lifting and a 3:1 ratio for pulling.


  Features

Thern 4HWF series power winches feature helical/worm gearing making them ideal for applications requiring secure load control and accurate positioning. The enclosed, directdrive gearing design delivers dependable operation and helps reduce maintenance, while a modular design means we can easily customize these winches to meet your exact specifications.


  • FLANGE MOUNTED MOTOR is a 230/460 volt 3 phase motor, 60 cycle, IP 55, TEFC severe duty, reversible, class F insulated, continuous duty brakemotor.
    Standard motors comply with relevant standards including NEMA, MG1, ANSI, CSA, IEC and ABS.
  • LOAD HOLDING MOTOR DISC BRAKE is spring set, electrically released for positive load control.
  • DIRECT DRIVE GEAR REDUCERS, comprised of helical/worm gears, deliver lower effi ciencies from 65% to 76% making winches well suited for applications requiring secure load control and accurate positioning.
    The heat treated helical/worm gear set provides improved durability and operates in an oil bath, enclosed in a high strength cast iron gearcase, SAE class 30. Doublelip oil seals keep oil in and contaminants out. Large capacity bearings ensure long life. Speed reducers meet AGMA standards.
  • FLANGE STYLE ROLLER BEARINGS are self-aligning bearings with cast housing to maintain smooth drum rotation.
  • WELDED STEEL DRUM with outside fl ange anchors allow uniform winding and help extend life of wire rope. Anchors allow cable to be over wound or under wound from either side of the drum.
  • EXTENDED SOLID STEEL DRUM SHAFT for uniform loading.

Options for 4HWF Model Power Winches from Thern

Options for 4HWF Model Power Winches from Thern

Options for 4HWF Model Power Winches from Thern

Options for 4HWF Model Power Winches from Thern

Options for 4HWF Model Power Winches from Thern
  • Options
  • DRUM MODIFICATIONS (A) include grooved drums, multiple compartment drums and modifi ed drum widths and diameters.
  • WINCH MOUNTING OPTIONS include base, wall or under hung installation.
  • CABLE PRESSURE BARS (B) help maintain uniform winding of wire rope.
  • LIMIT SWITCHES (C) provide secondary shut-off for load travel in one or two directions.
  • MOTOR OPTIONS include air or hydraulic, voltage or phase changes, IP 65, class F or H insulated, multi-speed operation.
  • DUTY RATINGS include IEEE 45 marine duty, tropical duty, severe duty and explosion proof ratings.
  • BRAKE OPTIONS include over-speed, caliper style, band, and more.
  • CONTROLS (D) are available in a wide range of standard and custom confi gurations for single or variable speed.
  • CORROSION RESISTANT FINISHES (E) for harsh or hazardous environments
  • MANUAL OVERRIDES for winch operation in power loss situations.
  • WIRE ROPE ASSEMBLIES sold separately.

Electric Motor Controls

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Model Description Approx.
Ship Wt.
lb kg
10S3D4 electric motor controls 230/3/60 to 3 hp 25 12
10S7D4 electric motor controls 230/3/60 to 7.5 hp 25 12
10S10D4 electric motor controls 230/3/60 to 10 hp 28 13
10S7E4 electric motor controls 460/3/60 to 7.5 hp 25 12
10S15D4 electric motor controls 460/3/60 to 15 hp 25 12

  Dimensions

Dimensions for Model 4HWF Power Winches from Thern

Dimensions for Model 4HWF Power Winches from Thern

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Model A B C D E H J K L M N P R S (Hole Diameter) V Ship Weight
(in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (in) (mm) (lb) (kg)
4HWF1M-1500-25 25.50 648 27.00 686 6.00 152 8.00 203 2.38 60 14.00 356 1.00 25 20.00 508 10.00 254 7.56 192 0.63 16 15.75 400 7.88 200 19/32 15 190 87
4HWF1M-1500-35 25.50 648 27.00 686 6.00 152 8.00 203 2.38 60 14.00 356 1.00 25 20.00 508 10.00 254 7.56 192 0.63 16 15.75 400 7.88 200 19/32 15 190 87
4HWF2M-2000-25 26.25 667 28.00 711 6.00 152 8.00 203 2.38 60 14.00 356 1.00 25 20.00 508 10.00 254 7.56 192 0.63 16 15.75 400 7.88 200 19/32 15 240 109
4HWF2M-2000-35 26.25 667 28.00 711 6.00 152 8.00 203 2.38 60 14.00 356 1.00 25 20.00 508 10.00 254 7.56 192 0.63 16 15.75 400 7.88 200 19/32 15 240 109
4HWF4M-4000-25 39.00 991 35.00 889 9.63 245 12.00 305 5.13 130 21.00 533 1.00 25 30.50 775 15.25 387 11.50 292 1.00 25 24.00 610 12.00 305 7/8 22 480 218
4HWF4M-4000-35 39.00 991 35.00 889 9.63 245 12.00 305 5.13 130 21.00 533 1.00 25 30.50 775 15.25 387 11.50 292 1.00 25 24.00 610 12.00 305 7/8 22 480 218
4HWF6M-6000-25 41.00 1,041 36.00 914 9.63 245 12.00 305 5.13 130 21.00 533 1.00 25 30.50 775 15.25 387 11.50 292 1.00 25 24.00 610 12.00 305 7/8 22 650 295
4HWF6M-6000-35 41.00 1,041 39.00 991 9.63 245 12.00 305 5.13 130 21.00 533 1.00 25 30.50 775 15.25 387 11.50 292 1.00 25 24.00 610 12.00 305 7/8 22 710 323
4HWF8M-8000-25 50.00 1,270 43.50 1,105 12.00 305 14.50 368 6.25 159 25.50 648 1.25 32 26.50 673 13.25 337 14.50 368 1.13 29 28.75 730 14.38 365 1-1/8 29 39.75 1,010 1,120 509
4HWF8M-8000-35 50.00 1,270 45.50 1,156 12.00 305 14.50 368 6.25 159 25.50 648 1.25 32 26.50 673 13.25 337 14.50 368 1.13 29 28.75 730 14.38 365 1-1/8 29 39.75 1,010 1,180 536

Drum Dimensions

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Model Drum
Diameter
Flange
Diameter
Drum
Width
Fleet Angle
Distance*
in mm in mm in mm ft m
4HWF1M 4.5 114 12 305 10 254 16 4.9
4HWF2M 5.5 140 12 305 10 254 16 4.9
4HWF4M 7 178 18 457 16 406 26 7.9
4HWF6M 9 229 18 457 16 406 26 7.9
4HWF8M 10.75 273 22 559 20 508 32 9.8

* Recommended minimum distance between drum and lead sheave for smooth drum.


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