Pentagon High Precision Direct Mounting Collet R8 (4mm -18mm)
Single-piece R8 collets serve as precision toolholders designed to securely grip round-shank cutting tools directly in a machine spindle with an R8 taper. These direct-mount units eliminate the need for separate sleeves, offering a rigid setup for manual milling operations. • Collet capacity: 4 - 18 mm • Internal thread: M12x1.5 / M12x1.75 • Material: High-quality spring steel (EN47) • Max body diameter: 31.75 mm
See it in action
Specifications
For: R8 (4mm -18mm)- Material
- High-quality spring steel (EN47)
- Spindle taper
- R8
- Internal thread
- M12x1.5 / M12x1.75
- Max body diameter
- 31.75 mm
- Overall length
- 102.3 mm
- Collet capacity
- 4 - 18 mm
- Weight
- 0.4 kg Approx
Configurations
Click a row to switch| Variant | Collet capacity | Internal thread | Max body diameter | Spindle taper | Price |
|---|---|---|---|---|---|
| R8 (4mm -18mm) | 4 - 18 mm | M12x1.5 / M12x1.75 | 31.75 mm | R8 | ₹480 |
| R8-3-20 | 4 - 18 mm | M12x1.5 / M12x1.75 | 31.75 mm | R8 | ₹3,800 |
Durability and Operational Efficiency
- Spring steel material provides excellent fatigue resistance under cyclic loading
- Reduces downtime through quick and reliable tool clamping mechanisms
- Maintains dimensional stability over extended periods of industrial use
- Approximate weight of 0.4 kg allows for easy handling during setup
- Low maintenance requirements contribute to long-term cost efficiency
Versatile Machining Applications
- Ideal for precision milling, drilling, and grinding operations on metal parts
- Suitable for toolroom setups requiring frequent tool changes and high accuracy
- Supports light to medium-duty cutting tasks in general engineering workshops
- Enhances performance in CNC retrofit projects using manual mill spindles
- Effective for holding end mills, drill chucks, and other R8-compatible tools
Direct Mounting R8 Spindle Compatibility
- Specifically engineered for direct mounting into standard R8 spindle tapers
- Compatible with internal thread specifications of M12x1.5 or M12x1.75
- Max body diameter optimized at 31.75 mm for secure fitment
- Overall length of 102.3 mm ensures proper engagement depth
- Simplifies installation by removing need for additional adapters or sleeves
High-Precision Single-Piece Construction
- Manufactured from high-quality spring steel (EN47) for superior resilience
- Single-piece design eliminates joint weaknesses and ensures concentricity
- Delivers consistent gripping force across the entire 4mm to 18mm capacity range
- Minimizes runout for enhanced machining accuracy and surface finish quality
- Robust build withstands high-speed rotational forces without deformation
More questions buyers ask
What is an R8 collet used for?
R8 collets are primarily used in milling machines to securely hold cutting tools like end mills and drill bits in the spindle.
What material are these Pentagon R8 collets made of?
These collets are manufactured from high-quality EN47 spring steel, ensuring excellent durability and fatigue resistance.
What is the clamping capacity of this R8 collet?
This specific model supports a wide clamping capacity ranging from 4mm to 18mm.
Are these collets compatible with all milling machines?
They are designed for machines with a standard R8 spindle taper, commonly found in vertical knee mills and turret mills.
What is the internal thread specification?
The collets are compatible with M12x1.5 or M12x1.75 internal drawbar threads.
What is the advantage of a single-piece collet design?
A single-piece design eliminates joint weaknesses, ensuring better concentricity and reduced runout for higher machining accuracy.
How much do these collets weigh?
Each collet weighs approximately 0.4 kg, making them easy to handle during tool changes.
Do you provide a GST invoice with the purchase?
Yes, all purchases include a valid GST invoice for your accounting and tax credit requirements.
Is pan-India delivery available?
Yes, we offer reliable pan-India shipping for all our industrial machine accessories.
What is the warranty policy for Pentagon tools?
Pentagon provides a standard manufacturer warranty on their tools; please contact our support team for specific terms regarding your purchase.
Who should choose the R8 (4mm-18mm) collet?
This is ideal for toolroom operators and machinists requiring a versatile, high-precision collet for standard milling and drilling tasks.
Who should choose the R8-3-20 set?
This set is better suited for workshops needing a comprehensive range of sizes for diverse machining projects.
How does the R8 (4mm-18mm) compare to the R8-3-20 set?
The R8 (4mm-18mm) is a single, versatile unit for specific tasks, whereas the R8-3-20 is a robust set designed for broader industrial applications.
Which collet offers better value for small workshops?
For small workshops with limited budgets, the R8 (4mm-18mm) provides high precision at a lower entry price point compared to the full set.
More like this
Full description
Single-piece R8 collets serve as precision toolholders designed to securely grip round-shank cutting tools directly in a machine spindle with an R8 taper. These direct-mount units eliminate the need for separate sleeves, offering a rigid setup for manual milling operations.
Read more ↓
• Collet capacity: 4 - 18 mm • Internal thread: M12x1.5 / M12x1.75 • Material: High-quality spring steel (EN47) • Max body diameter: 31.75 mm