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R8 End Mill Holder, 1" Bore, G6.3 Balanced 6,000 RPM - T0302
$80.56
Shop-Force precision R8 end mill holder with 1" bore for Weldon-flat end mills on R8 spindle milling machines. Built for dependable tool retention, repeatable setup and accurate machining. Key Features * Highest Accuracy: Taper to Bore Runout < 0.0005" T.I.R * Highest Tolerace: H7 or Better Bore Tolerance * High Quality Steel: Made of High Quality Chromium STEEL * Precision Balanced: G6.3 X 6,000 RPM CERTIFIED * Hardened & Ground Bore * Draw Bar Thread Size: 7/16"-20 * Quality Control: 100% Inspection of all Tool Holders * Veteran Owned Business Suitable for manual mills, Bridgeport-style knee mills, toolrooms and production machining.
Specifications & Tolerances
Specifications & Tolerances
- Highest Accuracy: Taper to Bore Runout < 0.0005" T.I.R
- Highest Tolerace: H7 or Better Bore Tolerance
- High Quality Steel: Made of High Quality Chromium STEEL
- Precision Balanced: G6.3 X 6,000 RPM CERTIFIED
- Hardened & Ground Bore
- Draw Bar Thread Size: 7/16"-20
- Quality Control: 100% Inspection of all Tool Holders
- Veteran Owned Business
Dimensions
| Bore (D1) | 1" |
|---|---|
| D2 (in) | 2.1 |
| L1 (in) | 7 |
| L2 (in) | 3 |
| L3 (in) | 0.695 |
| Weight (lb) | 3.05 |
Applications
Applications & Benefits
- Secure End Mill Retention for Heavy Milling Operations: The Weldon-style set screw design locks securely onto the end mill flat, providing excellent holding power during aggressive roughing, slotting, and side milling operations where tool pullout must be prevented
- Improved Accuracy for Precision Machining: The precision-ground R8 taper and accurately machined bore help minimize runout, resulting in improved dimensional accuracy, better surface finishes, and extended cutting tool life
- Ideal for Bridgeport and Manual Milling Machines: Designed specifically for R8 spindle machines, these holders provide a rigid and dependable connection between the spindle and cutting tool, making them well suited for toolrooms, maintenance departments, and production environments
- Enhanced Rigidity for Increased Cutting Performance: Unlike collet systems that can introduce additional deflection, solid end mill holders provide maximum rigidity, allowing machinists to achieve more consistent results when machining steel, stainless steel, cast iron, and other demanding materials
- Fast Tool Changes and Repeatable Setup: End mills can be quickly installed and removed while maintaining consistent tool positioning, reducing setup time and improving productivity for repetitive machining operations and production runs
| SF SKU | Bore (D1) | D2 (in) | L1 (in) | L2 (in) | L3 (in) | Weight (lb) |
|---|---|---|---|---|---|---|
| T0307 | 3/16" | 0.97 | 5.5 | 1.27 | 0.222 | 1.1 |
| T0305 | 3/8" | 1.27 | 5.5 | 2.16 | 0.33 | 1.1 |
| T0303 | 1/2" | 1.28 | 5.5 | 2.5 | 0.405 | 1.1 |
| T0306 | 5/8" | 1.55 | 5.5 | 1.36 | 0.455 | 1.5 |
| T0304 | 3/4" | 1.75 | 5.75 | 1.5 | 0.573 | 1.5 |
| T0308 | 7/8" | 1.95 | 6 | 1.92 | 0.565 | 1.95 |
| T0302 | 1" | 2.1 | 7 | 3 | 0.695 | 3.05 |
Note: Set screw sizes and the hex key sizes required for adjustment may vary by production run. Hex keys are not included. If a specific size is required, please contact us for confirmation.
Shop-Force Quality
Shop-Force manufactures precision tooling and industrial workholding products for professional machining, manufacturing, and maintenance applications. Our products are supported by in-house quality control and a commitment to consistent performance and reliability.