Description
Product Overview
The 1/2″ shank knee feed adapter is a simple and effective tool designed to convert a standard power drill into a knee feed drive for milling machines. It allows operators to raise and lower the knee quickly and easily without manual cranking.
This adapter is ideal for Bridgeport and Bridgeport-style mills and provides a low-cost alternative to installing a dedicated power feed system.
Applications
- Bridgeport and clone milling machines
- Manual mills without power feeds
- Shop maintenance and setup work
- Quick positioning of the knee
👉 These adapters are commonly used as an inexpensive way to automate knee movement
Key Features
- Works with standard 1/2″ power drills
- Fits 9-spline shafts (.630″ ID)
- Compatible with most mills using 5/8″ hubs
- Converts manual knee crank into powered movement
- Heavy-duty hardened steel construction
- Flats on shank for secure drill grip
- Compact and easy to use
Why This Tool Matters
Manually raising and lowering the knee:
- Is slow and physically tiring
- Takes time during setups
- Reduces efficiency
This adapter:
- Saves time during setup
- Reduces operator fatigue
- Speeds up positioning
👉 It’s one of the easiest upgrades you can make to a manual mill.
When to Use This Adapter
- When you don’t have a Z-axis power feed
- When doing frequent height adjustments
- During setup and positioning
- For occasional or budget-friendly upgrades
⚠️ Fitment Note
- Designed for 9-spline shafts (.630″ ID)
- May require minor machining for some mills
- Not universal—always verify compatibility
Specifications
- Shank Size: 1/2″
- Bore: .630″ (9 spline)
- Material: Hardened steel
- Compatibility: Bridgeport-style mills
- Function: Drill-powered knee feed
📞 Need Help Confirming Fitment?
Not sure if this will fit your mill or spline size?
👉 Call us or request a quote—we’ll help you confirm compatibility before you order.
