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Cheap ER Collet MPM-EC0070 Supplier, Manufacturer
Product Description
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, 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. Wide Clamping Range
Accommodates extensive sizing options, such as an ER32 chuck holding 3-20mm tools.
3. High Precision
Small radial runout ensures reliable machining accuracy and consistent operational standards.
4. 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 |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
| >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 |
| >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 |
| >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 |
| >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 |
| >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 | Runout tolerance | ||||
|---|---|---|---|---|---|---|
| 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 | |||
Product Video
Packing
Service
Qingdao Micro Precision Machinery Co., Ltd. has been providing the following CNC tools services to global customers for decades.
Business Type: OEM & ODM Manufacturer
DRW Format Supported: DWG, PDF, IGS, STEP, SLDPRT, SLDDRW, PRT, DRW, DXF, X_T, etc.
Customization: Available upon reaching specified quantity thresholds
Quality System: ISO9001: 2008 Certified
Our Advantages:
Reliable Quality
Competitive Price
High Precision & Tight Tolerance
Continuous Improvement
Defect-Free Products
On-Time Delivery
Customer Satisfaction
Excellent After-Sales Service
Frequently Asked Questions (FAQ)
How does an ER collet clamp the cutting tool?
The ER collet has 16 slots and a 16-degree taper matching the lock nut. As it is tightened, the compression forces elastic deformation that narrows the aperture to securely hold the tool.
What materials are used to manufacture these collets?
We choose materials according to application requirements. For heavy-duty or hard materials, high-hardness 42CrMo is utilized, while standard spring steel is used for regular operational hardness.
What is the runout precision range of your ER collets?
Our precision grades cover standard to ultra-precision tiers, featuring radial runout tolerances ranging from 0.005mm to 0.020mm depending on tool diameter and length specifications.
Do you offer custom manufacturing or OEM services?
Yes, we provide full OEM and ODM capabilities and accept customized production based on customer drawings when the required order quantity is met.
Which drawing file formats can you accept for custom orders?
We support common CAD and 3D formats including DWG, PDF, IGS, STEP, SLDPRT, SLDDRW, PRT, DRW, DXF, and X_T.
