Magnum 3 Inch Heavy Duty Precision Milling Boring Head with Dial (BH3)
Handle larger diameter boring tasks with superior stability and minimize deflection on heavy cuts with this heavy-duty boring head. This 3" head features a large, easy-to-read adjustment dial and a wide dovetail slide, making it an essential tool for machinists requiring tight tolerances on large bores. The increased mass significantly reduces vibration during deep or wide operations in structural steel.
Features
- Large Scale Dial - Facilitates fast and accurate diameter adjustments in 0.001" increments.
- Heavy-Duty Body - Hardened steel construction resists wear and provides maximum rigidity.
- Broad Compatibility - Designed for use with standard 3/4" industrial boring shanks and adapters.
Specifications
- Head Diameter: 3" (76.2 mm)
- Adjustment Increment: 0.001"
- Shank Compatibility: 3/4" (19.05 mm)
- Supplier Part Number: F1-18
- KMS Product Code: MAG-BH3
Common Shop Applications
- Boring large diameter cylinders and engine blocks on a mill.
- Precision hole finishing in heavy structural industrial components.
- Creating large bearing pockets with high-tolerance press fits.
Recommended Shop Add-Ons
- Don't forget: Magnum BB34S Boring Bar Set - Heavy-duty 3/4" bars designed for this larger head.
- Our machining experts suggest: Boring Head Shank - Ensure you select the correct R8 or Morse Taper shank for your mill.
Frequently Asked Questions
Q: Can I use 1/2" shank bars in this 3" head? A: This head is designed for 3/4" shanks. To use 1/2" bars, you would need a reducer sleeve, though 3/4" bars are best for rigidity.
Q: How do you lock the adjustment once the diameter is set? A: The BH3 features a side-mounted locking screw that clamps the dovetail slide securely to prevent movement during the cut.