1-3/8 in. Smooth Input 1:1.47 Ratio Rotary Cutter Gearbox

Description

Restore reliable power transfer to your rotary cutter with this heavy duty replacement gearbox. Built with a ductile iron housing for long lasting strength and dependable field performance in demanding mowing applications.

Features a 1-3/8 in. smooth input shaft and a 1-1/2 in. 12-spline output shaft for standard fitment. Operates at a maximum of 540 RPM with a 1:1.47 gear ratio and bevel gear design for efficient torque conversion. The input shaft can rotate clockwise or counter-clockwise for versatile installation. Designed for 4, 5, and 6 ft. rotary cutters with 40 HP compatibility. Fits many brands of mowers.

Mounting features 4 holes with a 5/8 in. size on a 6-3/4 in. bolt circle, with 4-3/4 in. distance between mounting holes and a 3/8 in. mounting base thickness. Stands 9 inches tall overall. Uses 90 weight gear oil (not included). The input shaft snap ring is included and located in the plastic tube attached to the shaft. Manufacturer Part Number: RW-300.

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### Specifications

Dimension

Bolt Pattern:

6-3/4 in. (Bolt Circle)

Height:

9 in.

Hole Size:

5/8 in.

Hole Spacing:

4-3/4 in. (Between Mounting Holes)

Input Shaft Length:

3-7/8 in.

Output Shaft Length:

4-1/2 in.

Spline Count:

Thickness:

3/8 in.

Specification

Bevel:

Yes

Brand:

Grizzly

Capacity:

40 HP

Description:

Mounting Pattern: (4) 3/4" Holes - 8" Pattern - 5.5" Center

Features:

Fits many brands of mowers
Gearbox RW-300
Horsepower: 40
Max RPM 540
Turns both clockwise or counterclockwise
For 4 ft., 5 ft., and 6 ft. rotary cutters
Housing construction: Ductile iron
Mounting Base Thickness is 3/8 inch
9 inches tall
Distance between mounting holes is 4-3/4 inch
Smooth input shaft: 1-3/8 in diameter X 3-7/8 inches long
Output shaft 1-1/2 inch diameter X 12 Spline being 4-1/2 inch length
Spline length is 2-5/8 inches
Gear ratio: 1:1.47
Gear type: Bevel gear
Bolt pattern: (4) 5/8 inch diameter holes on a 6-3/4 inch bolt circle
Uses 90 Weight Gear Oil (Not included) See item 16323
The input shaft snap ring comes with this and is located in the plastic tube attached to the shaft
Rotation is CW or CCW with no modifications; It also comes with the castilated nut
For castle nut use ASC # 102241 - 1" Castle Nut
For output shaft gearbox seal RW300 use # 89757
For input shaft gearbox seal RW300 use #89756
For blade hub use #89754
For replacement outer input shaft snap ring, use #135429
Replaces Kodiak KDK03-0012 and other brands.
Replaces Behlen 2088028

Hole Count:

Hub:

Blade Hub Compatible

Input:

1-3/8 in. Smooth

Material:

Ductile Iron (Housing)

Output:

1-1/2 in. 12-Spline

Ratio:

1:1.47

Spin Direction:

Clockwise or Counter Clockwise

Type:

Gearbox

Used On:

4 ft., 5 ft., 6 ft. Rotary Cutters

1-3/8 in. Smooth Input 1:1.47 Ratio Rotary Cutter Gearbox