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Model 4HS

Thern Power Winches

4WS Series Power Winches from Thern

  Models

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Model Model No. Extension Motor HP Load Rating Line Speed
Load Rating (lb) Line Speed (fpm) Motor Codes1 Clutch Option2 1st Layer Mid Drum Full Drum 1st Layer Full Drum
(lb) (kg) (lb) (kg) (lb) (kg) (fpm) (mpm) (fpm) (mpm)
4HS6M 5000 15 D, E, F C 2 5,100 2,314 3,800 1,725 3,100 1,407 13 4.0 22 6.7
4HS6M 5000 20 D, E, F C 3 5,100 2,314 3,800 1,725 3,100 1,407 13 4.0 33 10.1
4HS6M 5000 30 D, E, F C 5 5,100 2,314 3,800 1,725 3,100 1,407 13 4.0 55 16.8
4HS6M 6600 15 D, E, F C 3 6,600 2,994 5,000 2,269 4,000 1,815 15 4.6 25 7.6
4HS6M 6600 25 D, E, F C 5 6,600 2,994 4,900 2,224 4,000 1,815 25 7.6 41 12.5
4HS6M 6600 40 D, E, F C 7.5 6,600 2,994 5,000 2,269 4,000 1,815 39 11.9 64 19.5
4HS11M 9000 20 D, E, F C 5 9,000 4,083 6,200 2,814 4,700 2,132 19 5.8 35 10.7
4HS11M 9000 30 D, E, F C 7.5 9,000 4,083 6,200 2,814 4,700 2,132 27 8.2 51 15.5
4HS11M 9000 40 D, E, F C 10 9,000 4,083 6,200 2,814 4,700 2,132 37 11.3 70 21.3
4HS11M 11000 15 D, E, F C 5 11,000 4,990 7,600 3,449 5,800 2,631 15 4.6 28 8.5
4HS11M 11000 20 D, E, F C 7.5 11,000 4,990 7,600 3,449 5,800 2,631 21 6.4 40 12.2
4HS11M 11000 30 D, E, F C 10 11,000 4,990 7,600 3,449 5,800 2,631 27 8.2 51 15.5
4HS16M 13000 20 D, E, F C 7.5 13,000 5,897 8,900 4,039 6,700 3,040 19 5.8 37 11.3
4HS16M 13000 25 D, E, F C 10 13,000 5,897 8,900 4,039 6,700 3,040 24 7.3 46 14.0
4HS16M 13000 40 D, E, F C 15 13,000 5,897 8,900 4,039 6,700 3,040 37 11.3 72 21.9
4HS16M 16000 10 D, E, F C 5 16,100 7,303 11,000 4,992 8,300 3,765 11 3.4 21 6.4
4HS16M 16000 15 D, E, F C 7.5 16,000 7,258 10,900 4,947 8,300 3,765 16 4.9 30 9.1
4HS16M 16000 20 D, E, F C 10 16,100 7,303 11,000 4,992 8,300 3,765 20 6.1 38 11.6
4HS26M 22000 15 D, E, F C 10 22,000 9,980 16,200 7,352 12,800 5,807 16 4.9 27 8.2
4HS26M 22000 25 D, E, F C 15 22,000 9,980 16,100 7,307 12,700 5,761 23 7.0 40 12.2
4HS26M 22000 30 D, E, F C 20 22,900 10,388 16,800 7,624 13,200 5,988 29 8.8 50 15.2
4HS26M 26000 15 D, E, F C 10 26,000 11,794 19,000 8,623 15,000 6,804 13 4.0 23 7.0
4HS26M 26000 20 D, E, F C 15 26,000 11,794 19,000 8,623 15,100 6,850 19 5.8 33 10.1
4HS26M 26000 25 D, E, F C 20 26,000 11,794 19,100 8,668 15,000 6,804 26 7.9 45 13.7
4HS40M 33000 20 D, E, F C 20 33,100 15,015 24,100 10,937 18,900 8,574 19 5.8 34 10.4
4HS40M 33000 30 D, E, F C 30 33,000 14,969 24,100 10,937 18,900 8,574 29 8.8 51 15.5
4HS40M 33000 40 D, E, F C 40 33,100 15,015 24,100 10,937 18,900 8,574 39 11.9 68 20.7
4HS40M 40000 20 D, E, F C 20 40,300 18,281 29,300 13,297 23,000 10,433 17 5.2 29 8.8
4HS40M 40000 25 D, E, F C 30 40,300 18,281 29,400 13,342 23,100 10,479 23 7.0 41 12.5
4HS40M 40000 35 D, E, F C 40 40,000 18,144 29,400 13,342 22,900 10,388 34 10.4 59 18.0
4HS56M 48000 20 D, E, F C 30 48,000 21,773 37,200 16,882 30,300 13,745 21 6.4 33 10.1
4HS56M 48000 30 D, E, F C 40 48,000 21,773 37,200 16,882 30,300 13,745 28 8.5 44 13.4
4HS56M 52000 35 D, E, F C 50 52,200 23,678 40,400 18,334 32,900 14,924 33 10.1 52 15.8
4HS56M 56000 20 D, E, F C 30 56,000 25,402 43,300 19,650 35,400 16,058 18 5.5 29 8.8
4HS56M 56000 25 D, E, F C 40 56,000 25,402 43,400 19,695 35,400 16,058 24 7.3 38 11.6
4HS56M 56000 30 D, E, F C 50 56,200 25,493 43,500 19,741 35,500 16,103 30 9.1 47 14.3

1Clutch option for horizontal pulling only.
2Please contact your mdi sales representative for official price and delivery.


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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
Strength*
Drum
Capacity
4HS6M 4HS11M 4HS16M 4HS26M 4HS40M 4HS56M
(in) (mm) (lb) (kg)   (ft) (m) (ft) (m) (ft) (m) (ft) (m) (ft) (m) (ft) (m)
3/8 9.7 15,100 6849 1st 80 24.4
Mid 380 115.8
Full 850 259.1
7/16 11.2 20,400 9254 1st 68 20.7
Mid 290 88.4
Full 640 195.1
1/2 12.7 26,600 12,066 1st 60 18.3 76 23.2
Mid 220 67.1 520 158.5
Full 500 152.4 1,170 356.6
9/16 14.2 33,600 15,240 1st 53 16.2 67 20.4 89 27.1
Mid 180 54.9 420 128.0 690 210.3
Full 400 121.9 930 283.5 1,530 466.3
5/8 16.0 41,200 18,688 1st 59 18.0 78 23.8
Mid 340 103.6 560 170.7
Full 760 231.6 1,250 381.0
3/4 19.1 58,800 26,671 1st 48 14.6 65 19.8
Mid 240 73.2 400 121.9
Full 540 164.6 880 268.2
7/8 22.4 79,600 36,106 1st 54 16.5 94 28.7
Mid 290 88.4 480 146.3
Full 640 195.1 1,070 326.1
1 25.4 103,400 46,902 1st 47 14.3 82 25.0
Mid 220 67.1 370 112.8
Full 490 149.4 830 253.0
1-1/8 28.7 130,000 58,968 1st 71 21.6 110 33.5
Mid 300 91.4 580 176.8
Full 660 201.2 1,290 393.2
1-1/4 31.8 159,800 72,485 1st 63 19.2 95 29.0 160 48.8
Mid 240 73.2 460 140.2 730 222.5
Full 530 161.5 1,030 313.9 1,630 496.8
1-3/8 34.9 192,000 87,090 1st 56 17.1 85 25.9 140 42.7
Mid 200 61.0 390 118.9 610 185.9
Full 440 134.1 860 262.1 1,360 414.5
1-1/2 38.1 228,000 103,420 1st 77 23.5 130 39.6
Mid 330 100.6 510 155.4
Full 720 219.5 1,140 347.5
1-5/8 41.3 264,000 119,750 1st 110 33.5
Mid 430 131.1
Full 950 289.6
1-3/4 44.5 306,000 138,800 1st 110 33.5
Mid 370 112.8
Full 820 249.9
1-7/8 47.7 348,000 157,851 1st 97 29.6
Mid 320 97.5
Full 720 219.5

* Values based on 6x37 IWRC EIPS wire rope.
Actual drum capacities 25-30% less, due to non-uniform 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 4HS series power winches feature dual stage gear reduction for economical handling of large loads. The combination of helical/bevel or helical/parallel and spur gearing make these winches ideal for applications requiring long travel distances and faster line speeds. Our modular design also means we can quickly customize these winches to meet your specific requirements.


  •  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 handling.
  •  DUAL STAGE GEARING, comprised of a helical/bevel or helical/parallel and a spur gears, make winches well suited for applications requiring long travel distances and faster line speeds.
    The heat treated helical/bevel or helical/parallel gear set provides improved durability and operates in oil bath, enclosed in a high strength cast iron gearcase, SAE class 30. Double-lip oil seals keep oil in and contaminants out. Large capacity bearings ensure long life. Speed reducers meet AGMA standards.
    Guarded, heat treated spur gearing provides secondary reduction. Grease zerks allow for easy lubrication.
  •  FLANGE STYLE ROLLER BEARINGS are self-aligning bearings with cast housing to maintain smooth drum rotation.
  •  EXTENDED SOLID STEEL DRUM SHAFT with both ends captured in fabricated steel frame for optimal strength and security.
  •  WELDED STEEL DRUM with outside fl ange anchors allow for 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.

Options for Model 4HS Power Winches from Thern

Options for Model 4HS Power Winches from Thern

Options for Model 4HS Power Winches from Thern

Options for Model 4HS Power Winches from Thern

Options for Model 4HS Power Winches from Thern
  • Options
  • DRUM MODIFICATIONS (A) include grooved drums, multiple compartment drums and modifi ed drum widths and diameters.
  • MANUALLY OPERATED JAW CLUTCH (B) disengages for rapid payout of wire rope when not under load. Adjustable drag brake on the drum prevents over-spooling during payout. Clutch option is for horizontal pulling only.
  • WINCH MOUNTING OPTIONS include base, wall or under hung installation
  • CABLE PRESSURE BARS (C) help maintain uniform winding of wire rope.
  • LIMIT SWITCHES (A) 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 H insulated and 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.

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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
10S20D4 electric motor controls 230/3/60 to 20 hp 28 13
10S30D4 electric motor controls 230/3/60 to 30 hp 60 28
10S7E4 electric motor controls 460/3/60 to 7.5 hp 25 12
10S15E4 electric motor controls 460/3/60 to 15 hp 25 12
10S20E4 electric motor controls 460/3/60 to 20 hp 28 13
10S40E4 electric motor controls 460/3/60 to 40 hp 60 28
10S60E4 electric motor controls 460/3/60 to 60 hp 60 28

Controls include NEMA 4 rated enclosure, and NEMA X rated pendant control on 50 foot cord. Motor Controls sold separately.

  Dimensions

4HS6-26M Models

Dimensions for 4HS Power Winches from Thern

Dimensions for 4HS Power Winches from Thern

Dimensions for 4HS Power Winches from Thern

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Model A B C D E F G H J K L M N P R S (Hole Diameter) 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) (in) (mm) (lb) (kg)
4HS6M-5000-15 36.00 914 27.25 692 8.63 219 12.88 327 2.47 63 2.28 58 16.31 414 22.50 572 3.25 83 18.00 457 11.88 302 1.88 48 18.25 464 11.13 283 7/8 22 570 259
4HS6M-5000-20 36.00 914 29.25 743 8.63 219 12.88 327 2.47 63 2.28 58 16.31 414 22.50 572 3.25 83 18.00 457 11.88 302 1.88 48 18.25 464 11.13 283 7/8 22 570 259
4HS6M-5000-30 36.00 914 29.25 743 8.63 219 12.88 327 2.47 63 2.28 58 16.31 414 22.50 572 3.25 83 18.00 457 11.88 302 1.88 48 18.25 464 11.13 283 7/8 22 570 259
4HS6M-6600-15 36.00 914 29.25 743 8.63 219 12.88 327 2.47 63 2.28 58 16.31 414 22.50 572 3.25 83 18.00 457 11.88 302 1.88 48 18.25 464 11.13 283 7/8 22 570 259
4HS6M-6600-25 36.00 914 29.25 743 8.63 219 12.88 327 2.47 63 2.28 58 16.31 414 22.50 572 3.25 83 18.00 457 11.88 302 1.88 48 18.25 464 11.13 283 7/8 22 570 259
4HS6M-6600-40 36.00 914 29.25 743 8.63 219 12.88 327 2.47 63 2.28 58 16.31 414 22.50 572 3.25 83 18.00 457 11.88 302 1.88 48 18.25 464 11.13 283 7/8 22 650 295
4HS11M-9000-20 41.00 1,041 31.75 806 8.50 216 17.75 451 5.13 130 2.38 60 18.44 468 31.00 787 4.00 102 18.00 457 12.50 318 2.75 70 22.00 559 12.50 318 1-3/16 30 1,080 490
4HS11M-9000-30 41.50 1,054 34.75 883 8.50 216 17.75 451 5.13 130 2.38 60 18.44 468 31.00 787 4.00 102 18.00 457 12.50 318 2.75 70 22.00 559 12.50 318 1-3/16 30 1,120 509
4HS11M-9000-40 42.50 1,080 37.00 940 8.50 216 17.75 451 5.13 130 2.38 60 18.44 468 31.00 787 4.00 102 18.00 457 12.50 318 2.75 70 22.00 559 12.50 318 1-3/16 30 1,160 527
4HS11M-11000-15 41.00 1,041 31.75 806 8.50 216 17.75 451 5.13 130 2.38 60 18.44 468 31.00 787 4.00 102 18.00 457 12.50 318 2.75 70 22.00 559 12.50 318 1-3/16 30 1,080 490
4HS11M-11000-20 41.50 1,054 34.75 883 8.50 216 17.75 451 5.13 130 2.38 60 18.44 468 31.00 787 4.00 102 18.00 457 12.50 318 2.75 70 22.00 559 12.50 318 1-3/16 30 1,120 509
4HS11M-11000-30 42.50 1,080 37.00 940 8.50 216 17.75 451 5.13 130 2.38 60 18.44 468 31.00 787 4.00 102 18.00 457 12.50 318 2.75 70 22.00 559 12.50 318 1-3/16 30 1,160 527
4HS16M-13000-20 46.00 1,168 37.50 953 9.50 241 20.00 508 6.25 159 2.00 51 18.94 481 34.00 864 4.00 102 20.00 508 10.00 254 13.50 343 2.75 70 27.50 699 16.25 413 1-3/16 30 1,580 717
4HS16M-13000-25 47.00 1,194 39.50 1,003 9.50 241 20.00 508 6.25 159 2.00 51 18.94 481 34.00 864 4.00 102 20.00 508 10.00 254 13.50 343 2.75 70 27.50 699 16.25 413 1-3/16 30 1,640 744
4HS16M-13000-40 47.00 1,194 42.00 1,067 9.50 241 20.00 508 6.25 159 2.00 51 18.94 481 34.00 864 4.00 102 20.00 508 10.00 254 13.50 343 2.75 70 27.50 699 16.25 413 1-3/16 30 1,680 763
4HS16M-16000-10 46.00 1,168 34.50 876 9.50 241 20.00 508 6.25 159 2.00 51 18.94 481 34.00 864 4.00 102 20.00 508 10.00 254 13.50 343 2.75 70 27.50 699 16.25 413 1-3/16 30 1,520 690
4HS16M-16000-15 46.00 1,168 37.50 953 9.50 241 20.00 508 6.25 159 2.00 51 18.94 481 34.00 864 4.00 102 20.00 508 10.00 254 13.50 343 2.75 70 27.50 699 16.25 413 1-3/16 30 1,580 717
4HS16M-16000-20 47.00 1,194 39.50 1,003 9.50 241 20.00 508 6.25 159 2.00 51 18.94 481 34.00 864 4.00 102 20.00 508 10.00 254 13.50 343 2.75 70 27.50 699 16.25 413 1-3/16 30 1,640 744
4HS26M-22000-15 60.50 1,537 42.50 1,080 12.38 314 25.38 645 8.06 205 2.44 62 21.00 533 44.50 1,130 5.88 149 26.00 660 13.00 330 18.25 464 3.00 76 36.00 914 21.75 552 1-3/8 35 3,130 1,420
4HS26M-22000-25 60.50 1,537 45.00 1,143 12.38 314 25.38 645 8.06 205 2.44 62 21.00 533 44.50 1,130 5.88 149 26.00 660 13.00 330 18.25 464 3.00 76 36.00 914 21.75 552 1-3/8 35 3,170 1,438
4HS26M-22000-30 60.50 1,537 48.50 1,232 12.38 314 25.38 645 8.06 205 2.44 62 21.00 533 44.50 1,130 5.88 149 26.00 660 13.00 330 18.25 464 3.00 76 36.00 914 21.75 552 1-3/8 35 3,350 1,520
4HS26M-26000-15 60.50 1,537 42.50 1,080 12.38 314 25.38 645 8.06 205 2.44 62 21.00 533 44.50 1,130 5.88 149 26.00 660 13.00 330 18.25 464 3.00 76 36.00 914 21.75 552 1-3/8 35 3,130 1,420
4HS26M-26000-20 60.50 1,537 45.00 1,143 12.38 314 25.38 645 8.06 205 2.44 62 21.00 533 44.50 1,130 5.88 149 26.00 660 13.00 330 18.25 464 3.00 76 36.00 914 21.75 552 1-3/8 35 3,170 1,438
4HS26M-26000-25 60.50 1,537 48.50 1,232 12.38 314 25.38 645 8.06 205 2.44 62 21.00 533 44.50 1,130 5.88 149 26.00 660 13.00 330 18.25 464 3.00 76 36.00 914 21.75 552 1-3/8 35 3,350 1,520

4HS40-56M Models

Dimensions for 4HS Power Winches from Thern

Dimensions for 4HS Power Winches from Thern

Dimensions for 4HS Power Winches from Thern

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Model A B C D E F G H J K L M N P R S (Hole Diameter) 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) (in) (mm) (lb) (kg)
4HS40M-33000-20 91.00 2,311 60.00 1,524 14.00 356 27.00 686 6.75 171 2.63 67 24.63 626 51.00 1,295 7.00 178 30.00 762 21.00 533 4.00 102 52.00 1,321 31.50 800 1-3/4 44 5,570 2,527
4HS40M-33000-30 94.00 2,388 60.00 1,524 14.00 356 27.00 686 6.75 171 2.63 67 24.63 626 51.00 1,295 7.00 178 30.00 762 21.00 533 4.00 102 52.00 1,321 31.50 800 1-3/4 44 5,660 2,568
4HS40M-33000-40 96.00 2,438 60.00 1,524 14.00 356 27.00 686 6.75 171 2.63 67 24.63 626 51.00 1,295 7.00 178 30.00 762 21.00 533 4.00 102 52.00 1,321 31.50 800 1-3/4 44 5,800 2,631
4HS40M-40000-20 91.00 2,311 60.00 1,524 14.00 356 27.00 686 6.75 171 2.63 67 24.63 626 51.00 1,295 7.00 178 30.00 762 21.00 533 4.00 102 52.00 1,321 31.50 800 1-3/4 44 5,570 2,527
4HS40M-40000-25 94.00 2,388 60.00 1,524 14.00 356 27.00 686 6.75 171 2.63 67 24.63 626 51.00 1,295 7.00 178 30.00 762 21.00 533 4.00 102 52.00 1,321 31.50 800 1-3/4 44 5,660 2,568
4HS40M-40000-35 96.00 2,438 60.00 1,524 14.00 356 27.00 686 6.75 171 2.63 67 24.63 626 51.00 1,295 7.00 178 30.00 762 21.00 533 4.00 102 52.00 1,321 31.50 800 1-3/4 44 5,800 2,631
4HS56M-48000-20 108.00 2,743 72.00 1,829 18.00 457 32.00 813 8.75 222 2.63 67 23.13 588 62.00 1,575 7.00 178 36.00 914 18.00 457 25.00 635 4.50 114 63.00 1,600 34.50 876 1-3/4 44 9,220 4,183
4HS56M-48000-30 110.00 2,794 72.00 1,829 18.00 457 32.00 813 8.75 222 2.63 67 23.13 588 62.00 1,575 7.00 178 36.00 914 18.00 457 25.00 635 4.50 114 63.00 1,600 34.50 876 1-3/4 44 9,370 4,251
4HS56M-52000-35 113.00 2,870 72.00 1,829 18.00 457 32.00 813 8.75 222 2.63 67 23.13 588 62.00 1,575 7.00 178 36.00 914 18.00 457 25.00 635 4.50 114 63.00 1,600 34.50 876 1-3/4 44 9,480 4,301
4HS56M-56000-20 108.00 2,743 72.00 1,829 18.00 457 32.00 813 8.75 222 2.63 67 23.13 588 62.00 1,575 7.00 178 36.00 914 18.00 457 25.00 635 4.50 114 63.00 1,600 34.50 876 1-3/4 44 9,220 4,183
4HS56M-56000-25 110.00 2,794 72.00 1,829 18.00 457 32.00 813 8.75 222 2.63 67 23.13 588 62.00 1,575 7.00 178 36.00 914 18.00 457 25.00 635 4.50 114 63.00 1,600 34.50 876 1-3/4 44 9,370 4,251
4HS56M-56000-30 113.00 2,870 72.00 1,829 18.00 457 32.00 813 8.75 222 2.63 67 23.13 588 62.00 1,575 7.00 178 36.00 914 18.00 457 25.00 635 4.50 114 63.00 1,600 34.50 876 1-3/4 44 9,480 4,301

Drum Dimensions

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Model Drum
Diameter
Flange
Diameter
Drum
Width
Fleet Angle
Distance*
in mm in mm in mm in mm
4HS6M 7 178 14 356 18 457 29 8.8
4HS11M 9 229 20 508 18 457 29 8.8
4HS16M 10.75 273 24 610 20 508 32 9.8
4HS26M 14 356 28 711 26 660 42 12.8
4HS40M 18 457 36 914 30 762 48 14.6
4HS56M 24 610 43 1092 36 914 58 17.7

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


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