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Technical Sales 1–800–458–3687

Thern Model 4771 Helical/Worm Gear Power


 

Electric - 4771 12VDC - 4771DC Hydraulic - 4771HY Pneumatic - 4771PN

All Thern winches and cranes are sold without wire rope.

HELICAL/WORM GEAR POWER WINCHES

We Suggest you download the following Cut Sheet for Additional Information
Owners manual - 477 Series Manual
Cut Sheet - 477 Series DuraHoist

Feel Free to email your us your application for a Quote

Anchor your operation with the reliability of DuraHoist. With solid construction, internal lubrication and pendant control, the only thing you won’t need is worry.

QUICK FACTS

  • Machine cut gears
  • Enclosed oil bath
  • Internal mechanical brake
  • Cast aluminum
  • Ball bearings
  • Large diameter drums
  • Mounting options
  • 2-Year Limited Warranty

 

Durable and dependable, Thern heavy duty power winches are built to handle tough industrial jobs year after year.

Thern portable power winches are available in either worm gear or worm/helical gear configurations to efficiently raise, lower and pull loads weighing up to 2 ton. We also offer a variety of options to meet the needs of your unique application.

Thern portable power winches are manufactured with the following features:

  • Machine cut worm gears for accurate operation and long lasting service.
  • Enclosed oil bath provides continuous lubrication of gears to minimize wear.
  • 115 Volt Single Phase Electric Motor includes power cord with grounded plug and a momentary contact-type push button pendant control on a control cord.
  • Oil seals keep oil in and dirt out.
  • Internal mechanical brake provides positive load control for lifting and lowering operations.
  • Ball Bearings and self-aligning bronze bearings provide smooth and efficient operation.
  • Corrosion Resistant durable paint finish protects against corrosion in harsh environments.
  • Pressure Plate applies pressure to drum and wire rope to help maintain uniform winding. Included in standard Atlas Construction Winches.
  • Large Diameter Drums minimize wear to the wire rope and help extend its life.
  • Dual Function Cable Anchor for quick disconnect of wire rope with swagged ball fitting, or recessed cable anchor with set screw for wire rope with unfinished end.
  • Clutch Models allow operator to manually disengage the drum to rapidly unwind wire rope. Clutch models do not include pressure plates.
  • Accessory Options include limit switches, cable pressure plates, torque limiting controls, and emergency handles for manual operation.
  • Mounting options include floor, wall and ceiling.
  • Wire rope assemblies are sold separately.
  • 2-year Limited Warranty

For more information on other options available for an industrial, heavy-duty power winch, contact Us  today.

Start building your heavy duty power winch today. Call 800-458-3687 for more information on available options.

Owner’s Manual
477 Series Manual
Cut Sheet
477 Series DuraHoist
Owners Manual Cut Sheet

Feel Free to email your us your application for a Quote

Up to 2000 lb capacity
Machine Cut Worm Gears provide accurate operation and long lasting service.
Enclosed Oil Bath provides continuous lubrication of gears to minimize wear. Oil seals keep oil in and dirt out.
115 Volt Single Phase Electric Motor includes power cord with grounded plug and a momentary contact-type push button pendant control on a control cord.
Internal Mechanical Brake provides positive load control for lifting and lowering operations.
Ball Bearings and self-aligning bronze bearings provide smooth and efficient operation.
Pressure Plate on series 4WP2T8 only, applies pressure to drum and wire rope to help maintain uniform winding.
Dual Function Cable Anchor for quick disconnect of wire rope with swagged ball fitting, or recessed cable anchor with set screw for wire rope with unfinished end.
Mounting Options include floor, wall, or ceiling.
Wire Rope Assemblies sold separately.
Cast Aluminum construction, for lightweight strength.
Corrosion Resistant durable paint finish protects against corrosion in harsh environments
Large Diameter Drums minimize wear to the wire rope and help extend its life.
Clutch Model allows operator to manually disengage the drum to rapidly unwind wire rope. Clutch models do not included pressure plates.

 

   

Motor

Load Rating

Wire Rope

Line Speed

Drum Capacity1

Weight

Model No.

Motor Description

HP

1st Layer

Mid Drum

Full Drum

Dia.

1st Layer

Full Drum

1st Layer

Mid Drum

Full Drum

Approx. Ship

     

(lb)

(lb)

(lb)

(in)

(fpm)

(fpm)

(ft)

(ft)

(ft)

(lb)

47712

115/1/60 VAC – 6 ft pendant

1.2

2000

1500

1200

5/16

13

22

13

40

90

88

4771AC-1PH

115/1/60 VAC – less controls

1.2

2000

1500

1200

5/16

13

22

13

40

90

87

4771AC-1PH23

115/230/1/60 VAC – less controls

1.5

2000

1500

1200

5/16

13

22

13

40

90

115

4771AC-3PH3

230/460/3/60 VAC – less controls

1.5

2000

1500

1200

5/16

13

22

13

40

90

111

4771DC4

12 VDC – 10 ft pendant

1.0

2000

1500

1200

5/16

13

22

13

40

90

105

4771PN4,5

pneumatic – less controls

1.2

2000

1500

1200

5/16

13

22

13

40

90

70

4771HY4,5

hydraulic – less controls

2.3

2000

1500

1200

5/16

13

22

13

40

90

72

47772

115/1/60 VAC – 6 ft pendant

1.2

2000

1500

1200

5/16

13

22

7

27

60

93

4777DC4

12 VDC – 10 ft pendant

1.0

2000

1500

1200

5/16

13

22

7

27

60

105

.1 Actual drum capacities may be 25-30% less due to non-uniform winding. Wire rope tension will also affect drum capacity.
2 Motor includes an 8-foot power cord with grounded plug and a push button pendant control on 6-foot cord.
3 For models 4771AC-1PH2 and 4771AC-3PH, please specify voltage when ordering.
4 For pneumatic, hydraulic, and DC models, line speed is based on rated load, actual line speed varies with load weight and power supply.
5 For model 4771PN, ratings are for 80 cfm at 100 psi. For model 4771HY, ratings are for 4 gpm at 1000 psi.

FF10_0910.qxp

DuraHoist Model 4771 helical/worm gear power winches lift or pull up to 2,000 lbs.
4771 2000 lb  1.2 hp  115 VAC  1 phase electric with 6 ft pendant control
4771AC-1PH 2000 lb  1.2 hp  115 VAC 1 phase electric (without controls)
4771AC-1PH2 2000 lb  1.5 hp  115/230 VAC 1 phase electric (without controls)
4771AC-3PH 2000 lb  1.5 hp  230/460 VAC  3 phase electric (without controls)
4771DC 2000 lb 1.0 hp  12 VDC electric with 10 ft pendant control
4771PN 2000 lb  1.2 hp pneumatic 80 cfm at 100 psi (without controls or hoses)
4771HY 2000 lb  2.3 hp  hydraulic  4 gpm at 1000 psi (without controls or hoses)
4777 2000 lb  1.2 hp  115 VAC 1 phase electric with 6 ft pendant control drum
4777DC 2000 lb1.0 hp 12 VDC electric with 10 ft pendant control  4 drum width
477PN-CNTRL pneumatic control valve (not mounted or plumbed, no hoses)
477PN-HS6  6 ft hoses for pneumatic controls (not plumbed)
477HY-CNTRL  hydraulic control valve (not mounted or plumbed, no hoses)
477HY-HS6  6 ft hoses for hydraulic controls (not plumbed)

* Price Includes Electric Motor - Electronic Controls are sold sepertaly where no controls are included


477 Series Manual
477 Series DuraHoist Cut Sheet
Dimensions

Motor Codes
A 115 volt 1 Phase
B 230 volt 1 Phase
D 230 volt 3 phase
E 460 volt 3 phase
All other voltages or questions
please contact sales @ 800-458-3687
Feel Free to email your us your application for a Quote


 

Click here to view the Electronic Controls options
to Operate Power Winches Remotely


ELECTRONIC CONTROLS
10L2A1 NEMA 1
10L2A4 NEMA 4 – watertight
PNEUMATIC & HYDRAULIC CONTROLS
477PN-CNTRL pneumatic control valve (not mounted or plumbed, no hoses)
477PN-HS6  6 ft hoses for pneumatic controls (not plumbed) 
477HY-CNTRL  hydraulic control valve (not mounted or plumbed, no hoses) 
477HY-HS6  6 ft hoses for hydraulic controls (not plumbed) 

FF10_0910.qxp

4771
2000 LB _ 1.2 HP _ 115 VAC _ 1 PHASE ELECTRIC WITH 6 FT PENDANT CONTROL - WGT = 88 LBS
Mfg. item #: 4771
THE4771
Call for freight quote on this item or we will confirm freight charges before shipping.1
$1,872.50

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4771AC-1PH
2000 LB _ 1.2 HP _ 115 VAC _ 1 PHASE ELECTRIC (WITHOUT CONTROLS) - WGT = 87 LBS
Mfg. item #: 4771AC-1PH
THE4771AC-1PH
Call for freight quote on this item or we will confirm freight charges before shipping.1
$1,824.38

10
4771AC-1PH2
2000 LB _ 1.5 HP _ 115/230 VAC _ 1 PHASE ELECTRIC (WITHOUT CONTROLS) - WGT = 115 LBS
Mfg. item #: 4771AC-1PH2
THE4771AC-1PH2
Call for freight quote on this item or we will confirm freight charges before shipping.1
$1,964.38

10
4771AC-3PH
2000 LB _ 1.5 HP _ 230/460 VAC _ 3 PHASE ELECTRIC (WITHOUT CONTROLS) - WGT = 111 LBS
Mfg. item #: 4771AC-3PH
THE4771AC-3PH
Call for freight quote on this item or we will confirm freight charges before shipping.1
$1,938.13

10
4771DC
2000 LB _ 1.0 HP _ 12 VDC ELECTRIC WITH 10 FT PENDANT CONTROL - WGT = 105 LBS
Mfg. item #: 4771DC
THE4771DC
Call for freight quote on this item or we will confirm freight charges before shipping.1
$2,477.82

10
4771PN
2000 LB _ 1.2 HP _ PNEUMATIC _ 80 CFM AT 100 PSI (WITHOUT CONTROLS OR HOSES) - WGT = 70 LBS
Mfg. item #: 4771PN
THE4771PN
"Ships by UPS, see freight calculator at checkout."2
$2,016.88

10
4771HY
2000 LB _ 2.3 HP _ HYDRAULIC _ 4 GPM AT 1000 PSI (WITHOUT CONTROLS OR HOSES) - WGT = 72 LBS
Mfg. item #: 4771HY
THE4771HY
"Ships by UPS, see freight calculator at checkout."2
$2,283.75

10
4777
2000 LB _ 1.2 HP _ 115 VAC _ 1 PHASE ELECTRIC WITH 6 FT PENDANT CONTROL _ 4 DRUM - WGT = 93 LBS
Mfg. item #: 4777
THE4777
Call for freight quote on this item or we will confirm freight charges before shipping.1
$2,130.63

10
4777DC
2000 LB _ 1.0 HP _ 12 VDC ELECTRIC WITH 10 FT PENDANT CONTROL _ 4 DRUM WIDTH - WGT = 105 LBS
Mfg. item #: 4777DC
THE4777DC
lease to own for as little as:$57 per month!
Call for freight quote on this item or we will confirm freight charges before shipping.1
$2,831.79

10
477PN-CNTRL
PNEUMATIC CONTROL VALVE (NOT MOUNTED OR PLUMBED, NO HOSES) - WGT = 6 LBS
Mfg. item #: 477PN-CNTRL
THE477PN-CNTRL
"Ships by UPS, see freight calculator at checkout."2
$459.38

10
477PN-HS6
6 FT HOSES FOR PNEUMATIC CONTROLS (NOT PLUMBED) - WGT = 4 LBS
Mfg. item #: 477PN-HS6
THE477PN-HS6
"Ships by UPS, see freight calculator at checkout."2
$125.00

10
477HY-CNTRL
HYDRAULIC CONTROL VALVE (NOT MOUNTED OR PLUMBED, NO HOSES) - WGT = 5 LBS
Mfg. item #: 477HY-CNTRL
THE477HY-CNTRL
"Ships by UPS, see freight calculator at checkout."2
$406.88

10
477HY-HS6
6 FT HOSES FOR HYDRAULIC CONTROLS (NOT PLUMBED) - WGT = 4 LBS
Mfg. item #: 477HY-HS6
THE477HY-HS6
"Ships by UPS, see freight calculator at checkout."2
$115.00

10
10L2A1
NEMA 1 - WGT = 3 LBS
Mfg. item #: 10L2A1
THE10L2A1
"Ships by UPS, see freight calculator at checkout."2
$358.75

10
10L2A4
NEMA 4 _ WATERTIGHT - WGT = 7 LBS
Mfg. item #: 10L2A4
THE10L2A4
"Ships by UPS, see freight calculator at checkout."2
$560.00

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