ER Collet MPM-EC0070

ER collet is a common machine tool accessory, widely used in boring, milling, drilling, tapping, grinding, engraving and other CNC machine tool processing。It is suitable for diverse types of tools, such as milling cutter, drill, tap and so on.

product details

Description

The ER collet has 16 slots to make it elastic, while both the collet and the lock nut have 16 degrees of taper. During operation, During operation, the taper causes the ER collet to undergo elastic deformation through compression, thereby narrowing the clamping aperture and securely clamping the tool.

Regarding the material, it is necessary to choose the collet with suitable hardness according to the processing technology. For instance, when dealing with hard materials, a collet made of 42CrMo with higher hardness should be chosen，for normal hardness requirements, spring steel can be utilized.

Features

1.Large clamping force ensures firm fixation of the tool or workpiece, guaranteeing the stability of the processing process.
2.A wide range of clamping, such as ER32 chuck can hold 3-20mm tools.
3.High precision, small radial runout, can ensure the machining accuracy.
4.The simple structure facilitates convenient and rapid loading and unloading of tools, thereby improving work efficiency.

Parameter

Model No.	d H7	D	D1	D2	L	L1	L2	L3	Collapsible capacity
Model No.	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	3.80	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	21.0~2.5	25	26	22.0	34.0	6.66	5.0	3.1	0.5
ER25	>2.5~16.0	25	20	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	3.5	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	1.0	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

Parameter for inspection of accuracy:

D	L	Runouttolerance
		A	B	C	I	II
1.0~1.6	6	0.005	0.008	0.010	0.010	0.015
>1.6~3.0	10
>3.0~6.0	16
>6.0~10.0	25
>10.0~18.0	40				0.015	0.020
>18.0~26.0	50
>26.0~30.0	60
>30.0~34.0	80				0.020	0.030