K.O. Lee Expanding Mandrels KOL-Mandrel Applications
- Internal workholding for grinding, turning, and milling operations
- Machining thin sleeves, bushings, and delicate components
- Holding heavy castings and forgings during roughing and finishing
- Precision toolroom and production machining setups
- Facing and overhang machining operations
Designed to securely hold a wide range of parts without distortion while maintaining high concentricity and repeatability.
K.O. Lee Expanding Mandrels KOL-Mandrel Specifications
| Product Type | Expanding Mandrel System |
|---|---|
| Hole Capacity Range | 3/8″ to 5-1/2″ (9.5 to 139.7 mm) |
| Accuracy | 0.001″ (0.025 mm) or better |
| Mandrel Types | General Purpose & Heavy Duty Series |
| Construction | Precision Ground Arbors and Sleeves |
| Workholding Type | Internal Expanding Grip |
| Power Compatibility | Lathe, Milling Machine, Grinding Machine |
| Availability | Complete Sets or Individual Mandrels |
K.O. Lee Expanding Mandrels KOL-Mandrel Performance & Construction
- Large bearing surface sleeves provide secure grip, preventing slip and minimizing chatter during machining.
- Precision ground arbors and sleeves ensure consistent accuracy up to 0.001″ or better.
- Internal expanding mechanism allows uniform clamping without distorting thin-walled parts.
- Versatile workholding supports overhang machining and multiple positioning configurations.
- Auxiliary centers feature integrated oil reservoirs, extend arbor life, and protect center points.
- Wear-resistant design reduces maintenance and extends service life in production environments.
- Interchangeable mandrels eliminate the need for custom setups for each job.
K.O. Lee Expanding Mandrels KOL-Mandrel Series Options
- General Purpose Series: Covers 3/8″ to 2-1/2″ (9.53 to 63.5 mm), ideal for toolrooms, home shops, and light production.
- M90 Set: Includes M0, M1, M2 mandrels (3/8″ to 1″ capacity).
- M100 / M100X Sets: Extended range up to 1-9/16″ with flexible configurations.
- M101 Set: Full general-purpose coverage up to 2-1/2″ capacity.
- Heavy Duty Series: Covers 11/16″ to 5-1/2″ (17.5 to 139.7 mm), designed for production and heavy roughing operations.
- M200 / M200X / M201 / M202 Sets: Configurations for increased strength and larger diameter workholding.
Available as complete sets or individual mandrels, allowing flexible setup customization for any machining requirement.
K.O. Lee Expanding Mandrels KOL-Mandrel Configuration & Availability
- Complete mandrel and sleeve sets available across multiple size ranges
- Arbors and sleeves available separately for custom configurations
- Heavy-duty and general-purpose configurations to match application needs
- Multiple length and diameter options for precision fitment
- Mandrel boxes (legacy options, availability may vary)
Why Choose the K.O. Lee Expanding Mandrels KOL-Mandrel
- High-precision internal workholding with minimal distortion
- Wide size range covering small to large diameter applications
- Durable construction for both light and heavy-duty machining
- Flexible system reduces tooling inventory and setup time
- Proven performance in grinding, turning, and milling operations
The K.O. Lee Expanding Mandrels KOL-Mandrel system delivers precision, versatility, and reliability—making it an essential solution for machinists requiring accurate internal workholding across a wide range of applications.
