1-1/4" Mitts & Merrill #2-HYD-KS Keyseater - 12" Stroke - Automatic Tool Relief

Mitts & Merrill #2 Keyseater

Manufacturer: Mitts & Merrill | Model: 2 HYD / 2 KS | Type: Vertical Hydraulic Keyseater

Overview

The Mitts & Merrill #2 (often designated as the 2 HYD or 2 KS) is a standard-setting industrial keyseater used to cut internal keyways, splines, and internal gears. Unlike a broaching machine that requires a specific tool for every size, a keyseater uses a single-point cutter and a guided post, making it highly versatile for one-off jobs or small production runs.

The "#2" designation is particularly popular because it is large enough to handle most common industrial keyways (up to 1-1/4" wide) while maintaining a compact footprint that does not require a floor pit for installation.

Technical Specifications

• Maximum Keyway Width: 1-1/4" (31.75 mm)
• Maximum Keyway Length: 12" (304.8 mm)
• Table Size: 18" x 21" (Standard Plain Table)
• Largest Post Capacity: 2-3/8"
• Cutting Speed: 8.5 – 20.6 FPM (Feet Per Minute)
• Return Speed: 41.2 FPM
• Feed Range: .002" – .008" I.P.S. (Inches Per Stroke)
• Maximum Workpiece Weight: 2,500 lbs (on table)
• Main Motor: 5 HP – 7.5 HP (Standard 230/460V, 3-Phase)
• Machine Weight: Approx. 3,000 lbs
• Dimensions: 52" L x 26" W x 50" H

Key Features

• No Pit Required: The #2 model is designed with a low-profile stroke mechanism, allowing it to sit directly on a standard shop floor. This saves thousands in rigging and foundation costs.
• Automatic Tool Relief: During the return stroke, the cutter head automatically retracts from the workpiece. This prevents "rubbing" and significantly extends the life of your high-speed steel cutters.
• Hydraulic Crosshead Pull: Utilizing a hydraulic cylinder rather than a mechanical crank provides constant torque throughout the cut, resulting in a superior surface finish and less tool chatter.
• Versatile Tooling: Compatible with a wide range of standard Mitts & Merrill tool posts and expansion bushings, which are still widely available on the used market.