Value Collection SM33MT03 3MT Morse Taper Reamer Hss

Product Description

The VALUE COLLECTION SM33MT03 is a 3MT Morse taper reamer designed to finish-ream tapered bores to the precise geometry required for Morse taper tool holders, arbors, spindles, and machine sockets. Built from high-speed steel with a bright, uncoated finish, this reamer features a straight flute pattern and right-hand cutting action. The small end diameter is 0.7748 inches and the large end diameter is 0.9881 inches, with an overall length of 7.25 inches and a 4.25-inch flute length. The 0.3125-inch cylindrical straight shank fits standard chuck or collet setups for secure, concentric holding during the reaming operation. Machinists and toolroom technicians are the primary users.

This reamer is suited for toolroom, maintenance, and production environments where Morse taper bores must be finished to accurate size and taper angle. Typical applications include refurbishing worn machine spindles, fitting Morse taper sleeves and arbors, and opening tapered holes to final dimension in drill presses, lathes, and milling machines. The straight flute geometry provides good chip clearance in softer materials and allows the reamer to be sharpened with conventional tool-grinding equipment.

Key Features

• 3MT Morse taper profile with 0.7748-inch small end and 0.9881-inch large end
• High-speed steel construction for wear resistance across a range of workpiece materials
• Straight flute design for straightforward resharpening and clean cutting action
• Right-hand cutting direction for standard clockwise spindle rotation
• 0.3125-inch cylindrical shank for chuck or collet mounting
• Bright, uncoated finish — no coating buildup to affect final bore dimension

Compatibility

Designed as a standard 3MT Morse taper reamer suitable for finishing bores to the No. 3 Morse taper specification in machine tool spindles, arbors, and taper sleeves.

Installation Notes

This tool is installed and operated by machinists or skilled toolroom personnel. Before reaming, ensure the workpiece is securely fixtured and the machine spindle is aligned with the bore centerline to prevent bell-mouthing or taper error. Run the reamer at reduced spindle speed compared to drilling, with appropriate cutting fluid for the workpiece material. Never run a reamer in reverse, as this dulls the cutting edges.