1-3/8 in. 6-Spline Input 1:1.46 Ratio Rotary Cutter Gearbox

SKU: #87857
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. 6-spline input shaft and a 2 in. 15-spline output shaft for standard fitment. Operates at a maximum of 540 RPM with a 1:1.46 gear ratio and bevel gear design for efficient torque conversion. The input shaft can rotate clockwise or counter-clockwise for versatile installation. Designed for 5, 6, and 7 ft. rotary cutters with 75 HP compatibility. Mounting features 4 holes with a 3/4 in. size on an 8 in. bolt pattern.

Installation Tip: After installing the pan and blades onto the gearbox, ensure the blades when turned back toward the gearbox shaft do not hit the shaft or nut but clear them before using the rotary cutter.

Manufacturer Part Number: RW-610-6S.

Dimension
Bolt Pattern:
8 in.
Hole Size:
3/4 in.
Input Shaft Length:
3-3/4 in.
Output Shaft Length:
4-1/2 in.
Spline Count:
15
Specification
Bevel:
Yes
Brand:
Grizzly
Capacity:
75 HP
Description:
Mounting Pattern: (4) 3/4" Holes - 8" Pattern - 5.5" Center
Features:
  • Ductile iron housing for superior strength and long lasting durability
  • 1-3/8 in. 6-spline input shaft for standard PTO fitment
  • 2 in. 15-spline output shaft for reliable blade hub mounting
  • 1:1.46 gear ratio with bevel gear design for efficient torque conversion
  • Input shaft rotates clockwise or counter-clockwise for versatile installation
Hole Count:
4 (Mounting Holes)
Hub:
Blade Hub Compatible
Input:
1-3/8 in. 6-Spline
Material:
Ductile Iron (Housing)
Output:
2 in. 15-Spline
Ratio:
1:1.46
Spin Direction:
Clockwise or Counter Clockwise
Style:
Rotary Cutter Gearbox
Type:
Gearbox
Used On:
5 ft., 6 ft., 7 ft. Rotary Cutters
1-3/8 in. 6-Spline Input 1:1.46 Ratio Rotary Cutter Gearbox