450 Single Drum (4210)

450 SD (4210) Drawworks

ALCO manufactures 450 SD (4210) Drawworks to meet the demand of the Service Rig’s Hoisting needs. The modern design of the 450 SD (4210) Drawworks consists of five main parts: the drum, the motor(s), the gearbox, the brake, and the optional auxiliary brake. The motors can be AC or DC-motors, or ALCO’s Drawworks may be connected directly to diesel engines. The number of gears could be one, two or three speed combinations. The main brake, usually operated manually by a long handle, may be friction band brake, a disc brake or a modified clutch. It serves as a parking brake when no motion is desired. The auxiliary brake is connected to the drum, and absorbs the energy released as heavy loads are lowered. The 450 SD (4210) Drawworks is a lightweight yet durable Drawworks with a number of options that can meet your unique hoisting needs.


Types of ALCO Manufactured 450 SD (4210) Drawworks

ALCO supplies a large variety of options to have fitted on you Drawworks. From Lebus grooving, Auxiliary Brake options, Crown Savers, Gear Box options, Engine options and customized skid design ALCO can custom manufacture the perfect Drawworks for your Service Rigging needs.


Contact our expert sales staff for pricing, availability and product specifications for the 450 SD (4210) Drawworks right for your application at the link provided on this page

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Maximum Input Horse Power Rating: 450 HP / 335 kW

Recommended Wireline Size: 1”

Maximum Single Line Pull Capacity: 42,000 lbs. / 18 680 daN

Maximum Hook Load with 4 Lines Strung: 152,000 lbs. / 67 600 daN

Maximum Hook Load with 6 Lines Strung: 220,000 lbs. / 97 800 daN


Main Drum:

Dia. x Width: 18” x 36”

Brake Rim Dia. x Width: 42” x 10”

Brake Contact Area: 2,420 in2

Brake Cooling Type: Air

Brake Blocks: 10” x 12” x 1-1/8”

Clutch: PO324

Chain: 1-1/2” Double


Standard Equipment:

Right Angle Drive Gear Box

Central Greasing System


Optional Equipment:

Auxiliary brake: Kobelt 40” x 4” x 7”


Air Supply Required:

100-130 psi (Max 150 psi)


Dimensions / Miscellaneous

Length: 97”

Width: 98-5/8”

Height: 54 -3/4”

Weight: 12,000 lbs(Approx.)including RAG Box, Chains & Lubrication