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Tuff Torq - 7A646084551 - K57af Briggs Transaxle - For Snapper/Ferris/Simplicity - 80028518

Tuff Torq – 7A646084551 – K57af Briggs Transaxle – For Snapper/Ferris/Simplicity – 80028518

Original price was: $1,365.05.Current price is: $273.01.

SKU: SK0085135-US20260630-101428 Category: Tag:

Genuine OEM Tuff Torq – 7A646084551 – K57af Briggs Transaxle

Replaces the Following:

Snapper/Ferris/Simplicity – 80028518

K57

Note: Your unit may look different. The picture is a stock photo of the K57 Series.

Manufacturer ID: K57

If your application is a little more heavy duty, or calls for secondary hydraulic support, the K57 may be just what you’re looking for. This powerful unit has many different configurations that have been developed to handle the demands of many different kinds of riding mowers and larger lawn tractors. The K57 is truly a “Swiss Army Knife” of transaxles. This has made this powerful product one of the first solutions to many OEM’s complicated and innovative new product applications.

Features

    Patented L.O.G.I.C. case design for easy installation, reliability and serviceability.

    Internal wet disk brake system.

    Reversible output/control lever operating logic for application optimization.

    Smooth operation for either foot or hand control system.

Specifications

Specification

Value

Units

Application

Rear Engine Riding Mower
Lawn Tractors
4WD Tractors and Mowers
Ride-on Mowers
Articulating Mowers
Estate Tractors

Reduction Ratio

31.68:1
28.04:1
21.53:1

Axle Torque (Rated)

31.68:1 = 255 (188)
28.04:1 = 235.4 (174)
21.53:1 = 180.7 (133)

Nm (lb-ft)

Max. Tire Diameter

31.68:1 = 559 (22)
28.04:1 = 508 (20)
21.53:1 = 457 (18)

mm (in)

Brake Capacity

31.68:1 = 372 (275)
28.04:1 = 330 (243)
21.53:1 = 253 (187)

Nm (lb-ft) *@350 N (79 lb) Brake arm force

Displacement (Pump/Motor)

7/10

cc/rev

Max. Input Speed

3,400

rpm

Axle Shaft Size

19.05 (0.75)

mm (in)

Weight (dry)

12.5 (27.6)

kg (lb)

Brake Type

Internal Wet Disc

Housing (Case)

Die-Cast Aluminum

Gears

Heat-treated Powder Metal
Heat-treated Steel gears available as optional upgrade

Differential

Automotive-type Bevel Gears

Speed Control System

Foot Control: Dampening system or external shock absorber available
Hand Control: External friction pack and lever available

Bypass Valve (Roll Release)

Standard

Hydraulic fluid Type

Proprietary Tuff Torq Tuff Tech drive fluid recommended. (Contact OEM for other options)

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