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Bison 20

Dual-Speed Hydraulic Recovery Winch

The Bison 20 dual-speed hydraulic recovery winch delivers a pulling capacity of 9,070 kg. Featuring a PTO-driven hydraulic system, dual-speed motor, hardened planetary gears, air clutch, and patented multi-disc brake, it ensures fast, stable operation for heavy-duty trailers and commercial recovery applications. It complies with SAE J706, the CE Machinery Directive 2006/42/EC, and EN 14492-1:2006 for power-driven winches.

Dual-speed hydraulic motor provides two operating modes in one integrated system.
Powered by a PTO (power take off unit) driven pump with variable recovery speeds for high working rate
155.7 cm³/rev highly efficient and constant operating torque motor with 9,070 kg / 20,000 lb capacity
Hardened 2 stage planetary gear train with 30:1 gear ratio provides faster line speed
Built-in air clutch for rapid wire rope payout
The Multi-Disc Brake ( MDB ) patented for holding full load
Great for severe duty trailers, roll-back carriers, and commercial recovery application
Roller fairlead, cable tensioner and two ways counterbalance valve supplied
Meet SAE J706, CE machinery directive 2006/42/EC or EN 14492-1:2006 Power Driven Winches

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SPECIFICATIONS

Part number : PN 682705 Dual-Speed (175 bar / 2,540 psi)

Rated line pull:	Low Speed	Hi Speed
	(at 60 l / min at 1^st layer of rope)
	9,070 kg / 20,000 lb	4,080 kg / 9,000 lb
Line speed:	5.8 mpm /19.0 fpm	11.6 mpm / 38.1 fpm
Operation pressure:	175 bar / 2,540 psi
Max oil flow:	60 l/min (15.9 g/min)
Hydraulic motor:	160 cm³/ rev (9.8 in³/rev)
Gear train :	2 stage planetary gears
Gear ratio :	30 : 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:	146 mm (5.8")
Drum flange diameter:	314 mm (12.4”)
Distance between flanges:	203.2 mm (8")
Wire rope recommended:	14 mm x 43 m (9/16” x 141’), 1,960 N/mm²breaking strength of 137 kN required for SAE J706 ratings 16 mm x 30 m (5/8” x 98’), 1,960 N/mm²breaking strength of 179 kN required for EN-14492-1 ratings

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
	Low Speed	Hi Speed	14 mm rope	16 mm rope	at 60 l/min (15.9 g/min ), mpm / fpm
	Low Speed	Hi Speed	14 mm rope	16 mm rope	Low Speed	Hi Speed
1^st	9,070 / 20,000	4,080 / 9,000	7 / 23	20 / 6	5.8 / 19.0	11.6 / 38.1
2^nd	7,719 / 17,018	3,472 / 7,655	15 / 49	43 / 13	6.5 / 21.0	13.7 / 45.0
3^rd	6,719 / 14,813	3,022 / 6,662	24 / 79	69 / 21	7.9 / 26.0	15.7 / 51.5
4^th	5,948 / 13,113	2,675 / 5,897	34 / 112	98 /30	8.9 / 29.2	17.7 / 58.1
^5th	5,335 / 11,762	2,400 / 5,291	46 / 151		9.9 / 32.5	19.8 / 65.1

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