ER Collets

ER Collets Manufacturer & Global Precision Tooling Supplier

ER collets provide a practical clamping solution for compatible CNC tool holders and shank-type cutting tools. Correct bore selection, holder compatibility, and specified clamping conditions are essential for consistent tool seating and machining performance.

Our precision tooling capabilities include five-axis grinding, dedicated tool inspection, non-standard tool manufacturing, OEM/ODM services, and tool regrinding. We work with industrial customers worldwide to review product specifications, customization requirements, and order details before supply.

ER Tapping Collets
ER tapping collets hold threading taps in compatible ER collet chucks for internal thread machining. The precision bore locates the tap shank, while the internal square engages the tap's...
Sealed ER Collets
Sealed ER collets combine precision tool clamping with coolant sealing for compatible ER tool holder assemblies. They help control coolant flow around the tool shank and support delivery through...
Coolant-Through ER Collets
Coolant-Through ER Collets combine tool clamping with a dedicated coolant passage for CNC machining. Depending on the configuration, coolant is directed through a compatible cutting tool or routed...
Stainless Steel ER Collets
Stainless Steel ER Collets are clamping components for compatible ER collet chucks and toolholding systems. The slotted body contracts around a cylindrical shank when secured in the matching...
ER Collets For Micro-Diameter Tools
ER collets for micro-diameter tools provide precision clamping for small-shank cutting tools in compatible ER toolholders. Selection depends on the ER series, nominal bore diameter, clamping...
High-Precision ER Collets
High-precision ER collets hold cylindrical-shank cutting tools in compatible ER collet chucks. Available in multiple series and bore sizes, they support CNC milling, drilling, reaming, and other...

Why Choose Us

Precision Manufacturing

Five-axis grinding centers support precision cutting tool production. Dedicated inspection equipment helps verify critical dimensions against the applicable product drawing and specified tolerances.

Drawing-Based Customization

For non-standard requirements, provide the drawing, bore dimensions, tolerance limits, material requirements, and intended application. These details help establish the technical scope before production.

OEM/ODM Support

Private-label projects can include product specifications, branding, labeling, and packaging requirements. Customization is reviewed according to technical feasibility, order quantity, and project scope.

Practical Technical Assistance

Support is available for product selection, dimensional requirements, holder compatibility, and tool regrinding assessment. Clear technical information helps align the requested product with its intended use.

Product Features

Accurate Bore Selection

The collet bore must match the tool shank diameter and the specified clamping range. Selecting the correct size supports proper seating and helps maintain consistent tool retention.

Ground Contact Surfaces

The bore, external taper, and mating surfaces affect how the collet seats in the holder assembly. Dimensional requirements should be confirmed for the selected model and application.

Compatible Clamping Assembly

An ER collet must be used with a compatible holder and clamping nut. Correct assembly and tightening according to the applicable instructions help support stable toolholding during machining.

Defined Accuracy Requirements

Runout performance depends on the collet, holder, nut, tool shank, assembly condition, and measurement method. Specify the required tolerance and test conditions when accuracy is critical.

Applications

CNC Milling

ER collets can hold compatible end mills and other shank-type cutting tools in matching tool holders. Select the bore according to the tool shank and confirm the holder interface before use.

Drilling and Reaming

For drilling and reaming operations, verify shank dimensions, tool compatibility, and the operating requirements of the complete holder assembly.

Mold and Die Machining

Mold and die work may require specific dimensional and runout requirements. Confirm the required collet size, holder series, and accuracy criteria for the machining task.

General Component Manufacturing

Consistent product specifications help standardize tool setup across recurring production jobs. Confirming series, bore size, and order specifications also supports repeat purchasing.

ER Collet Specifications

Parameter	Specification
Product type	ER Spring Collets
Bore size increment	0.5 mm, subject to available sizes
Measurement system	Metric: mm
Typical material	Spring steel
Surface hardness	HRC 44–48*
Bore tolerance	0 / −0.01 mm*
Taper angle	8° included angle

Quality Control and Documentation

Dimensional Verification

Critical dimensions are assessed against the applicable product drawing and agreed tolerance requirements. Confirm the dimensions that are essential to your application before order approval.

Inspection Equipment

Dedicated tool inspection equipment supports dimensional checks and product evaluation during quality control. Inspection requirements should correspond to the selected product and its intended use.

Documentation Requirements

If an order requires inspection reports, material information, or other technical records, identify these requirements during quotation. The available documentation can then be confirmed for the selected product and order.

Available ER Collet Types

High-Precision ER Collets

For applications with defined dimensional or runout requirements. Specify the required tolerance, compatible holder, and measurement conditions so the appropriate product specification can be reviewed.

ER Collets for Micro-Diameter Tools

For compatible small-diameter tool shanks. Selection should account for the nominal bore, specified clamping range, holder series, and tool dimensions.

Coolant-Through ER Collets

For compatible tooling assemblies designed to deliver coolant through the toolholding system. Confirm the collet design, holder configuration, tool passage, and coolant requirements before selecting this type.

OEM/ODM and Custom ER Collets

Custom Dimensions

Provide a technical drawing with the required bore size, key dimensions, tolerance limits, and material requirements. Include the intended holder and application to support an initial feasibility review.

Private-Label Supply

Branding, labeling, and packaging requirements can be discussed for private-label projects. Provide artwork or packaging specifications, expected quantities, and any product identification requirements.

Specification Approval

Before customized production, confirm the agreed drawing, inspection criteria, quantity, packaging details, and delivery schedule. This approval process helps keep manufacturing and order requirements aligned.

Manufacturing Capabilities

Five-axis grinding centers support precision cutting tool production, while dedicated tool inspection equipment supports dimensional verification. Manufacturing services also include non-standard tooling and tool regrinding, subject to product suitability and technical requirements.

For custom projects, the review can cover drawing details, dimensions, tolerance limits, material requirements, and inspection criteria. These items establish the product specification used for quotation and production planning.

Bulk Supply and Export Orders

Order Planning

Provide the required ER series, bore sizes, quantities, and expected purchasing frequency. A clear item list helps organize quotation details and supports planning for repeat orders.

Lead Time Confirmation

Delivery schedules are confirmed according to the selected products, order volume, customization scope, and current production arrangements. Confirm the requested delivery date during quotation.

Packaging and Shipping

Packaging, labeling, and shipping details can be arranged according to the order requirements and destination. Include any special packaging instructions and delivery terms when submitting your inquiry.

Technical Support and Tool Regrinding

Tooling Assessment

Provide the product model, tool shank diameter, holder details, and machining conditions. These details help clarify compatibility and identify the relevant technical requirements.

Regrinding Evaluation

Regrinding suitability depends on tool geometry, wear condition, remaining material, and the required finished dimensions. Provide the tool type and available technical information for an initial assessment.

Application Guidance

Technical discussions can cover ER series selection, bore dimensions, holder compatibility, and specified accuracy requirements. Confirming these details before ordering helps align the selected product with the intended application.

Frequently Asked Questions

Q: How do I choose the correct ER collet?

A: Match the collet bore to the tool shank diameter, then confirm the ER series and compatibility with the holder and clamping nut.

Q: Can ER collets from different series be interchanged?

A: The series, dimensions, clamping range, holder, and nut must be compatible. Confirm the complete assembly specifications before ordering.

Q: Are metric and inch bore sizes available?

A: Specify the required measurement system and bore sizes in your inquiry. Available sizes are confirmed against the current product range.

Q: How should I specify runout accuracy?

A: State the required tolerance and measurement conditions, along with the holder and tool details where available. The applicable product specification can then be reviewed.

Q: Can you supply customized ER collets?

A: OEM/ODM requirements can be reviewed according to the drawing, dimensional tolerances, material requirements, branding, packaging, and order quantity.

Q: What information should I include in a quotation request?

A: Provide the ER series, bore sizes, quantities, required tolerances, destination country, requested delivery date, and any customization or documentation requirements.

Request a Quote for ER Collets

Send your requirements to support a clear product and order review. Include the following information where applicable:
ER series and required bore sizes
Quantity and expected order frequency
Technical drawings and dimensional tolerances
Material and inspection requirements
OEM/ODM, labeling, and packaging details
Destination country and requested delivery date

With abundant experience, we are one of the most reliable er collets manufacturers and suppliers in China. We warmly welcome you to buy durable er collets at competitive price from our factory. If you have any enquiry about cooperation, please feel free to email us.

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