Tar River ERC Series - ERC Rotary Cutter Gearbox

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ERC Square Back Rotary Cutter

ERC Rotary Cutter Gearbox

Note 1: There are two styles of gearboxes for the ERC Rotary Cutters. Previous models were supplied with

a gearbox having a smooth input shaft, (Fig. A). Current production models are equipped with gearboxes

having a splined input shaft, (Fig. B). Before ordering parts, identify your machine’s gearbox by examining

the shaft whether it is has smooth input shaft or splined input shaft.

Fig. A Fig. B

Gearbox with smooth shaft:

Replace the shear bolt with PN

BM1217585 (Class 8.8) or

BS1/2-13x3SB (Grade 5).

Gearbox with splined shaft:

A shear bolt is not required on

the gearbox but is for the PTO.

Replace the PTO shear bolt with

PN BM0812550 (Grade 5).