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BT-ER Collets Chuck Sets

COMPLETE CHUCK SETS

Everything you need in one package

High-precision BT-ER collet chuck sets for CNC machining applications. Complete sets include the chuck holder and a range of collets to cover your most common tool diameters - great value compared to buying separately.

SET INCLUDES

BT-ER chuck holder

Multiple ER collets in various sizes

ER nut included

Storage case (in some sets)

Check the QTY & Sizes specification to see exactly which collet sizes are included in each set.

Specifications

Material & Construction

Material: High-grade Steel, Hardness: HRC58-62

Understanding QTY & Sizes - ER Collet Diameters

Each set includes multiple ER collets with different diameters. The QTY & Sizes specification shows the number of collets included and their diameter range in millimeters.

8PCS(3-10mm) → Includes: 3, 4, 5, 6, 7, 8, 9, 10mm

6PCS(6-20mm) → Includes: 6, 8, 10, 12, 14, 16, 18, 20mm

11PCS(4-20mm) → Includes: 4, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20mm

18PCS(3-20mm) → Includes: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20mm

7PCS(6-25mm) → Includes: 6, 8, 10, 12, 16, 20, 25mm

15PCS(4-26mm) → Includes: 4, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20, 22, 24, 25, 26mm

23PCS(4-26mm) → Includes: 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26mm

Note: Blue badges indicate ER16/ER20/ER32 collets (smaller sizes), green badges indicate ER40 collets (larger sizes).

BT-ER Collets Chuck Sets

Name: BT-ER Collets Chuck Sets
Brand: ZHUZHOU SENO
SKU: bt-er-collets-chuck-sets
Availability: InStock

Select Specifications

D=Diameter | L1, L2, L3=Length Dimensions | L=Overall Length | D1=Shank Diameter | All in mm

Select blade width, groove depth (T), and working radius range to find the right Face Groove tool

Select boring diameter range, shank diameter (D), and insert type (C=diamond/T=triangular) to find the right boring head

Select CBA model (complete boring range) and internal boring range to find the right micro finish boring head

Select LBK model (matches your CBA boring head) and extension length to find the right extension rod

Select BT type (spindle taper), LBK number (locking block socket), CBA head model, and projection length (L1) to find the right boring head shank

Variant Type

Orientation

φ Dmin (Minimum Bore Diameter)

φ d (Diameter)

Square Dimension (h)

How to Choose the Right Holder

Shank Height (H): Choose based on your machine's tool holder/turret slot size
Tool Height (H3): Must match the H dimension of your SPB Tool (26mm or 32mm)

Example: If you have SPB26-3 tool (H=26mm), select H3=26mm

Width (W)

Shank Height (H)

Tool Height (H3)

Must match your SPB Tool's H dimension

Product Type

Size

Length

Drill Type

Diameter (D)

Length Variant

Flutes

HRC Grade

HRC≤56 is recommended for best price/performance ratio with newest nano-black coating technology.

Blade Width

Groove Depth (T)

Radius Range (Min/Max)

Found variant

Legend:

Blade Width Groove Depth (T) Radius Range Compatible Insert

No variants match the selected filters.

Try adjusting your filter selections.

Found variant

Legend:

Width (W) Height (H) Other Dimensions Insert/Accessories

No variants match the selected filters.

Try adjusting your filter selections.

ER Collet Model

Diameter

Diameter (D)

Length (L)

Shank Diameter (d)

Cutting Diameter

Corner Radius

Overall Length

GT Model

Thread Capacity

Standard

Lifting Capacity

Model

Model Code

QTY & Sizes

Shank Type

Collet System

Length (L1)

Type

Bore Diameter (d)

Length (L1) (Optional)

MTA Type

Tap Type

Thread Size

Pitch (mm)

Length

ERG Model

Metric Thread Size

ER Nut Type

ER Nut Model

Spanner Type

Spanner Model

Standard

Model

Model Code

Base Model

Length (L)

C Holder Size

ER Collet Size

Grade / Type

Length (L1) (Optional)

SL Holder Size

ER Collet Size

SK Type

ER Collet Size

Length (L1)

SK Taper

SLN Bore Size (inner diameter "d")

BT Type

BSA Size (for square shank tools)

BT Type

BSB Size (for square shank tools)

BT Type (spindle taper)

GT Chuck Type (tapping collet system)

Shank Diameter (D) (straight shank)

GT Chuck Type (tapping collet system)

Morse Taper Type (spindle taper)

GT Chuck Type (tapping collet system)

BT Type (spindle taper)

Clamping Range (drill bit size range)

MT Type (Morse Taper)

Capacity (drill bit size range)

SK Type (spindle taper)

Range (drill bit size range)

B Type (arbor taper)

MT Type (Morse Taper)

BT Type (spindle taper)

MT Type (tool taper)

Puller Type (DIN standard)

Model (MS.NO size)

Clamping Range (drill bit size range)

Taper Type (Morse or Jacobs)

Variation (chuck configuration)

Boring Range (min-max diameter)

Shank Diameter (D) (boring bar shank)

Insert Type (C=diamond, T=triangular)

CBA Model (complete boring range)

Internal Boring Range (diameter range)

LBK Model (extension rod size)

Extension Length (L) (reach)

BT Type (spindle taper)

LBK No. (locking block socket)

CBA Head (boring head model)

Projection Length (L1) (reach into workpiece)

Select Variant (multiple options available for this diameter)

SKU / Article Number

φ(d)

Morse #

★

Price per piece

€

30% Discounted price

D (Diameter)

L (Overall)

Insert Code

Insert Count

Insert

Blade Width

Blade Height

Groove Depth

Orientation

Working Radius Range

Compatible Inserts

φ(d)

Morse #

H7 Tolerance

Stock: pcs

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Please select specifications above to see details

BT-ER Collets Chuck Sets

SET INCLUDES

Specifications

Material & Construction

Understanding QTY & Sizes - ER Collet Diameters

BT-ER Collets Chuck Sets

Select Specifications

How to Choose the Right Holder

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