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
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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?
An R8 collet is primarily used in milling machines to hold cutting tools like end mills, drill bits, and reamers securely in the spindle.
What material are these Pentagon R8 collets made of?
These collets are manufactured from high-quality EN47 spring steel, ensuring excellent fatigue resistance and durability.
What is the clamping range of the standard R8 collet?
The standard R8 collet has a 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 milling machines.
What is the advantage of a single-piece collet design?
A single-piece design eliminates joint weaknesses, ensuring better concentricity and higher machining accuracy.
Do you provide a GST invoice with the purchase?
Yes, all purchases include a valid GST invoice for your business records.
Is pan-India delivery available?
Yes, we offer reliable pan-India delivery for all our industrial machine accessories.
What is the weight of the standard R8 collet?
The standard R8 collet weighs approximately 0.4 kg.
What internal thread specifications do these collets support?
They support M12x1.5 or M12x1.75 internal thread specifications.
How do I choose the right collet for my machine?
Ensure your machine spindle is R8 compatible and check the required clamping diameter for your specific cutting tools.
Who should choose the R8 (4mm-18mm) collet?
This is ideal for general toolroom milling, drilling, and grinding tasks requiring high precision and frequent tool changes.
Who should choose the R8-3-20 collet set?
This set is best for heavy-duty industrial applications where hardened alloy steel is needed for superior gripping force and longevity.
How does the R8 (4mm-18mm) compare to the R8-3-20 set?
The R8 (4mm-18mm) is a single-piece spring steel collet for standard precision work, while the R8-3-20 is a hardened alloy steel set designed for more demanding, heavy-duty machining.
Which collet offers better durability for high-speed machining?
The R8-3-20 set, made from hardened alloy steel, is generally more robust for high-speed and heavy-duty industrial machining environments.
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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.
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• Collet capacity: 4 - 18 mm • Internal thread: M12x1.5 / M12x1.75 • Material: High-quality spring steel (EN47) • Max body diameter: 31.75 mm