Four body families
Use C20, C25, C32 or C42 plus the listed body dimensions to identify the collet.
Catalog reference image. Final configuration is confirmed in the quotation.
Collets
Request a quote
C20-C42
C Type Straight Shank Collets
Overview
C20, C25, C32 and C42 straight-shank collets with metric and selected inch bores. Compare body diameter, length and individual bore options in the model table.
AvailabilityConfirm before order
Lead timeQuote based
Product description
C type straight shank collets are arranged by C20, C25, C32 and C42 body families. The catalog includes body dimensions and separate bore selections, including selected inch options. Match the complete collet geometry to the existing clamping system; a similar nominal bore alone does not establish that two collets are interchangeable.
Bore assortments
Metric and selected inch bores are listed separately within the family table.
Drawing-led replacement
Compare D, D2, L and L1 with the existing system before specifying a substitute.
Specify C32 and the individual bore separately
The C32 metric row lists D = 32 mm, D2 = 37.5 mm, L = 65 mm and L1 = 61.5 mm. Its listed bores are 6, 8, 10, 12, 16, 20 and 25 mm. A request such as “C32 metric, 12 mm bore, quantity 4” identifies the family and bore more clearly than “32 mm collet.” This is an ordering example; availability still requires confirmation.
Request C32 metric bores. Attach the receiving-holder identification if this is a replacement. Compare SK collets or ER collets only after identifying the actual holder system.
C32 mixed and C42 inch: choose a listed bore
The bore lists below describe individual options, not a continuous clamping range. The C32 mixed row includes 1/8 inch; the C42 inch row starts at 1/4 inch. Both list 1/2 inch, but their body dimensions differ, so the bore alone does not identify a replacement.
- C32 mixed — inch bore options: 1/8, 1/4, 5/16, 3/8, 1/2, 5/8, 3/4 and 1 inch. Request a C32 mixed-row bore.
- C42 inch — bore options: 1/4, 5/16, 3/8, 1/2, 5/8, 3/4 and 1 inch. Request a C42 inch bore.
State the exact bore in inches and the quantity for each size. A list of catalog options does not confirm that all sizes are included in one package; confirm the selected sizes and mating-holder drawing in the quotation.
Download the C-type collet identification worksheet (fillable PDF, 2 pages)
Record the C20, C25, C32 or C42 body family separately from each tool bore and quantity. Include D, D2, L and L1 measurements, the existing holder identification and photographs when requesting a replacement.
Specifications & model range
Dimensions are in millimeters unless otherwise stated. Confirm the final drawing before ordering.
- Series
- C20, C25, C32, C42
- Bore options
- Metric and selected inch
- Catalog length
- 52.5-80 mm
6 catalog rows
Select an underlined catalog reference to include that row in your inquiry.
| Series | D | Listed bore options | D2 | L | L1 |
|---|---|---|---|---|---|
| C20 | 20 | 6, 8, 10, 12, 16 | 25 | 52.5 | 49 |
| C25 | 25 | 4, 5, 6, 8, 10, 12, 14, 16, 18, 20 | 30 | 60 | 56.5 |
| C32 metric | 32 | 6, 8, 10, 12, 16, 20, 25 | 37.5 | 65 | 61.5 |
| C32 mixed | 32 | 3, 4, 5, 14, 18, 24 mm; selected inch bores (see product description) | 37.5 | 65 | 61.5 |
| C42 metric | 42 | 6, 8, 10, 12, 16, 20, 25, 32 | 47 | 80 | 76 |
| C42 inch | 42 | Selected inch bores (see product description) | 47 | 80 | 76 |
No matching model in this table. Try a shorter code, or send your required size or drawing.
Ranges and slash-separated values describe catalog families, not every possible combination. Confirm the complete model and drawing before ordering.
Application scenarios
Typical selection contexts for this series, not customer project claims. Confirm machine compatibility and cutting conditions for your setup.
Existing C systems
Replacing collets in machines already using a confirmed C type clamping arrangement.
Mixed-size workshops
Maintaining separate metric and inch tool shank selections.
Accessory supply
Supplying replacement bores against a customer's existing collet drawing.
Inspection & order review
Specify the dimensions, tolerances and records your order requires. Acceptance criteria must be agreed for the selected model.
Catalog fields to check
- Series
- D
- Listed bore options
- D2
- L
- L1
Check the drawing reference faces and units. A catalog size alone does not define a tolerance or an inspection method.
Records to request
List any required dimensional report, material document or model identification photograph in your inquiry. Confirm availability and scope in the quotation.
For a drawing-based part, include the drawing revision and identify the critical dimensions. Website photographs are not inspection reports.
Packaging & delivery
Agree the packing method and photo requirements when confirming your order.
Order-specific photo confirmation
No verified shipment photographs for this series are currently published. Include selected-model, protective-packing and outer-label photos in your order requirements.
Discuss packing requirementsPhotos to confirm before dispatch
Use this checklist to agree what should be documented for your selected model.
- Body family and bore list identified separately
- Longitudinal slots and locating surfaces protected
- Mixed metric and inch items labeled clearly
Stock, dispatch date and shipping method are confirmed with the quotation. Website images are not live inventory evidence.
Technical resources
Product specifications
Keep a copy of the current series information for comparison. Confirm the final model and drawing before placing an order.
View specificationsCompare collet families
Distinguish ER, R8, C-type and SK connections before choosing a bore.
Read the guideRelated selection information
Browse the existing tooling guides and compare product families before selecting a model.
Browse technical resourcesRelated product series
Compare alternative interfaces and complementary tooling. A related series is not automatically interchangeable.
ER8-ER40
ER Precision Collets
Models and specifications
SK10-SK25
SK Collets
Models and specifications
C-ER
Straight Shank ER Collet Chuck Extensions
Models and specificationsDoes C32 describe the tool bore?
In this table C32 identifies the collet family. The supplied bore is selected separately.
Are C collets interchangeable with ER collets?
Do not assume interchangeability. Their connection geometry must be matched to the intended holder.
Can I order the inch bores as metric equivalents?
Use the exact required bore designation. A rounded metric conversion should not replace the specified inch size.
What is needed if my existing collet has no marking?
Provide clear views and measured body diameters, lengths and bore, together with details of the holder.