Description
Maximize the rigidity of your milling setup with the Magnum R8COL34, a heavy-duty 3/4-inch precision collet. Built for standard R-8 milling machine spindles, this draw bolt collet delivers the exceptional clamping force required to hold large 3/4-inch shank cutters securely during aggressive material removal in the shop.
Features
- 3/4-inch clamping capacity – Firmly grips large-shank tooling to prevent slip under heavy loads
- R-8 taper profile – Fits universally into standard manual knee mill spindles
- Precision ground surfaces – Ensures high concentricity for chatter-free milling operations
Specifications
- Collet Series: R-8
- Clamping Diameter: 3/4″ (19.05 mm)
- Supplier Part Number: MAG-R8COL34
- KMS Product Code: MAG-R8COL34
Compatibility
Compatible with any milling machine utilizing a standard R-8 spindle taper and drawbar system.
Common Shop Applications
- Holding heavy 3/4-inch shank roughing end mills for deep pocketing
- Securing large 3/4-inch test indicator holders in the spindle
Recommended Shop Add-Ons
- Magnum End Mill
- Magnum Dial Indicator
Frequently Asked Questions
Q: Is this the maximum size for an R-8 collet? A: While R-8 collets can go up to 7/8-inch, 3/4-inch is often the practical maximum for maintaining optimal wall thickness and gripping strength.
Q: How tight should I pull the drawbar? A: Snug the drawbar firmly with a wrench to ensure the collet fully compresses, but avoid over-torquing which can strip the internal threads.









