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Bison 40t

Dual-Speed Hydraulic Recovery Winch

Traditional hydraulic winches require a trade-off between line speed and pulling force. The Bison 40t Dual-Speed Hydraulic Recovery Winch eliminates that compromise by delivering both in a single winch. Operators can switch between High-Speed Mode for rapid cable retrieval and Low-Speed Mode for maximum pulling force, maximizing productivity without increasing hydraulic flow or system pressure.

Dual-Speed Operation
High-Speed Mode for fast no-load recovery; Low-Speed High-Torque Mode for maximum pulling power.
40,000 kg (88,184 lb) Pulling Capacity
Powered by a 492 cm³/rev hydraulic motor for heavy-duty performance.
High-Precision Roller Bearings
Fitted on drum and gear assemblies to reduce friction and extend service life.
Hardened 2-Stage Planetary Gear Train
53.5:1 gear ratio provides optimal line speed and strength.
PTO-Driven System
Driven by a PTO pump for variable recovery speeds and high work efficiency.
Air Clutch System
Built-in air clutch for rapid and easy wire rope payout.
Patented Multi-Disc Brake (MDB)
Ensures reliable, positive full-load holding safety.
Control & Safety Accessories
Includes cable tensioner and two-way counterbalance valve.
Certified Compliance
Meets SAE J706 and CE Machinery Directive 2006/42/EC.

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SPECIFICATIONS

	Low Speed	Hi Speed
Rated line pull:	40,000 kg / 88,184 lb	20,000 kg / 44,092 lb
Line speed:	6.1 mpm (20.1 fpm)	11.8 mpm (38.7 fpm)
Hydraulic motor:	492 cm³/ rev (30.0 in³/rev)	255 cm³/ rev (15.6 in³/rev)
Operation pressure:	180 bar / 2,610 psi
Max oil flow:	185 l/min (48.9 g/min)
Gear train :	2 stage planetary gears
Gear ratio :	53.5 : 1
Winch construction:	Cast housings with steel drum
Clutch (Freespooling):	Output shaft disengaged
Brake:	Multi-Disc Brake (MDB) patented and counterbalance valve supplied
Rotation of winch:	Wire rope shall be under-wound orientation only
Drum barrel diameter:	250 mm (9.9")
Drum flange diameter:	518 mm (20.4”)
Distance between flanges:	568 mm (22.4")
Wire rope recommended:	28 mm x 80 m (10/9” x 263’), 1,960 N/mm²breaking strength of 507 kN required for SAE J706 rating

PERFORMANCE DATA

Line Pull and Rope Capacity

Layer of Wire Rope	Pull by Layer, kg / lb	Total Rope on the Drum, m / ft	Line Speed
		Std . drum	at 185 l/min (48.9 g/min ), mpm / fpm
		Std . drum	Low Speed	Hi Speed
1^st	40,000 / 88,158	15.5 / 51	6.1 / 20.1	11.8 / 38.9
2^nd	33,293 / 73,399	34.0 / 112	7.4 / 24.2	14.2 / 46.7
3^rd	28,513 / 62,860	55.7 / 183	8.6 / 28.2	16.6 / 54.5
4^th	24,933 / 54,967	80.0 / 262	9.8 / 32.3	19.0 / 62.3

Warning

The winch is not intended to be used in any manner for the movement or lifting of personnel.
The rated line pull shown is based on the first layer of rope on the drum.
The rope winding on the drum shall remain 5 wraps from the drum.

Warranty