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DIN6499B ER Collets

Product Name: ER Spring Collet

Material: 65Mn

Usage: Milling Drilling

Accuracy: 0.005mm 0.008mm 0.015mm

Standard: DIN6499B ER Collets Chuck

Clamping range: 1-34mm

Type: ER8 ER11 ER16 ER20 ER25 ER32 ER40

Color: Silver Grey

Service: OEM

Inspection: 100% Inspection

1. Made of special elastic steel material

2. Power clamping ability, precise accuracy

3. Used for boring, milling, drilling, tapping, grinding and engraving operationetc.

Mounting instruction for ER collets and nuts

1. Put the collet into the nut, tum the collet sighly, pust it into the nut at ghe offered direction evenly, When the offset flange into the undercut of the collet.

2. Fix the nut and the collet on the spindle rotate the nut until the collet is in pressing. Wipe the straight shank of cutter, and insert it into the pilot hole, Tighten the unt with a wrench till the cutter is clamped heavily (Caution: never tighten the nut without cutter in it for it will break).

3. When changing the tool, Loosen the nut and it shall bring out the collet and the cuter together, and then draw the cuter out push out slightly the collet in the offered direction, it shall be ready for any change of the cutter.

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Product Details

DIN6499B ER Collets

HT-0001	ER SERIES COLLETS WITH STANDARD DIN6499B
Model	d H7	D	D1	D2	L	L1	L2	L3	Collapsible capacity
ER8	≥1.0-5.0	8	8.45	6.5	13.5	2.98	1.5	1.2	0.5
ER11	≥1.0-7.0	11	11.5	9.5	18.0	3.8	2.5	2.0	0.5
ER16	≥1.0-2.5	16	17	13.8	27.5	6.26	4.0	2.7	0.5
ER16	>2.5-10.0	16	17	13.8	27.5	6.26	4.0	2.7	1.0
ER20	≥1.0-2.5	20	21	17.4	31.5	6.36	4.8	2.8	0.5
ER20	>2.5-13.0	20	21	17.4	31.5	6.36	4.8	2.8	1.0
ER25	≥1.0-2.5	25	26	22.0	34.0	6.66	5.0	3.1	0.5
ER25	>2.5-16.0	25	26	22.0	34.0	6.66	5.0	3.1	1.0
ER32	≥2.0-2.5	32	33	29.2	40.0	7.16	5.5	3.6	0.5
ER32	>2.5-20.0	32	33	29.2	40.0	7.16	5.5	3.6	1.0
ER40	≥3.0-26.0	40	41	36.2	46.0	7.66	7.0	4.1	1.0
ER50	≥6.0-10.0	50	52	46.0	60.0	12.6	8.5	5.5	1.0
ER50	>10.0-34.0	50	52	46.0	60.0	12.6	8.5	5.5	2.0

Inspection of Accuracy
D	L	Run out toierance
D	L	Ⅰ	Ⅱ
1.0-1.6	6.00	0.01	0.02
>1.6-3.0	10.00
>3.0-6.0	16.00
>6.0-10.0	25.00
>10.0-18.0	40.00	0.02	0.02
>18.0-26.0	50.00	0.02	0.02
>26.0-30.0	60.00
>30.0-34.0	80.00	0.02	0.03

FAQ

Q1: What the ER collet used for?

A1: ER collet is DIN6499B standard spring clamping component, widely used in CNC milling, lathe, engraving machine. It clamps cutting tools for high‑precision machining.

Q2: What is the monthly production volume of the collet?

A2: 30,000 - 50,000 pieces

Q3: What material, hardness and accuracy?
A3: Material: 65Mn spring steel.Accuracy: 0.003mm / 0.005 mm / 0.008 mm / 0.015 mm TIR for selection.

Q4: What equipment is it compatible with?
A4: Complies with DIN6499B standard. Fits all standard ER tool holders, applicable for CNC machine, milling machine, engraving machine.

Q5: Do you support OEM & custom service?
A5: Yes. We support OEM, custom non‑standard size, laser logo, special package. Samples are available.

Q6: How can I get quotation?
A6: Send us your required model, quantity and special requirements for quotation.

Q7: What is your quality control process?
A7: Strictly controlled on heat treatment, precision grinding. Each piece inspected with testing equipment, inspection report can be provided upon request.

Q8: Any tips for proper selection?
A8: Select collet size close to tool shank diameter. Do not use at extreme clamping limit to guarantee accuracy and service life.

Q9: MOQ & lead‑time?

A9: Standard items: no strict MOQ, 3‑7 working days. Custom/OEM: MOQ 200pcs, 15‑25 working days.

Q10: Warranty terms?

A10: Manufacturing defects support replacement within 6 months. Damage from crash, misuse or normal wear is not covered.

Catalog is available for download.

https://www.httools.com/data/upload/main/20260730/6a6ab0277d331.pdf

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