Jet Equipment CM9-3717053 Countershaft Sheave Drill Press

Product Description

The JET EQUIPMENT CM9-3717053 is a countershaft sheave designed as a replacement drive component for JET drill press units. A sheave is the grooved wheel or pulley that seats the drive belt, transferring rotational power from the motor to the spindle through the countershaft assembly. This part maintains correct belt alignment and speed-step selection, which are essential for consistent drilling performance. It is a direct OEM-style replacement intended for installation by machine tool technicians or qualified shop maintenance personnel.

This countershaft sheave is designed for use with the JET 1200 20-inch drill press. It fits within the belt-drive system housed in the head assembly, where proper sheave condition directly affects spindle speed accuracy and belt service life. Replacement is typically needed when the sheave shows groove wear, cracking, or damage that causes belt slippage or misalignment.

Key Features

• OEM-style countershaft sheave for direct replacement fitment
• Designed for use with belt-driven drill press countershaft assemblies
• Compact form factor at 4 x 4 x 4 inches, suitable for the JET 1200 head housing
• Lightweight construction at 1 pound for straightforward handling during installation
• Sold individually as a single unit

Compatibility

Designed for use with the JET 1200 20-inch drill press as stated by the manufacturer.

Installation Notes

Installation of this sheave should be performed by a qualified machine tool technician or experienced maintenance professional. Before servicing, disconnect and lock out all electrical power to the drill press in accordance with applicable OSHA lockout/tagout procedures. Remove the belt guard and drive belt before extracting the worn sheave, and inspect the belt for wear before reinstallation. Verify correct belt tension and sheave alignment after installation to prevent premature wear.