KORRETTO · permanent magnetic chucks
Fine Pole Permanent Magnetic Chuck
Fine pole permanent magnetic chucks are used for small, thin and precision ferromagnetic workpieces that require stable magnetic holding without continuous electrical power. The series includes rectangular and circular fine pole permanent magnetic chuck specifications.
Send the workpiece size, thickness, contact area, required holding stability and whether a rectangular or circular fine pole permanent magnetic chuck is needed.

Product Overview
Fine pole permanent magnetic chucks use dense pole distribution to improve holding support for small, thin and precision ferromagnetic workpieces. This page covers both rectangular and circular fine pole permanent magnetic chuck series.
Typical Applications
- Small and thin ferromagnetic workpieces
- Precision grinding with limited contact area
- Rectangular and circular fine pole magnetic workholding setups
- Stable holding where continuous power is not preferred
Key Features
Fine pole distribution
Improves support for small-area magnetic contact.
Rectangular and circular series
Covers two common workpiece geometry requirements.
Permanent magnetic holding
No continuous holding power is required.
Precision-focused structure
Suitable for small precision ferromagnetic parts and thin workpieces.
Parameters and Dimensions
Use the dimension drawings and parameter tables below to select rectangular or circular fine pole permanent magnetic chuck models.
Dimension Drawings


Main Dimensions (mm) in both tables are translated from the Chinese source and kept consistent with original model data.
| Inch Model | Model | Main Dimensions (mm) | Net Weight (kg) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | |||
| 4"*7" | XM91 100*175 | 100 | 175 | 18 | 4 | 10 | 2.0(0.5+1.5) | 45 | 7 |
| 5"*10" | XM91 125*250 | 125 | 250 | 18 | 4 | 10 | 2.0(0.5+1.5) | 45 | 13 |
| 6"*6" | XM91 150*150 | 150 | 150 | 18 | 4 | 10 | 2.0(0.5+1.5) | 45 | 9.4 |
| 6"*12" | XM91 150*300 | 150 | 300 | 18 | 4 | 10 | 2.0(0.5+1.5) | 45 | 19 |
| 6"*14" | XM91 150*350 | 150 | 350 | 18 | 4 | 10 | 2.0(0.5+1.5) | 45 | 22 |
| 6"*16" | XM91 150*400 | 150 | 400 | 20 | 4 | 10 | 2.0(0.5+1.5) | 45 | 26 |
| 6"*18" | XM91 150*450 | 150 | 450 | 20 | 4 | 10 | 2.0(0.5+1.5) | 45 | 29 |
| 8"*16" | XM91 200*400 | 200 | 400 | 20 | 4 | 10 | 2.0(0.5+1.5) | 45 | 35 |
| 8"*18" | XM91 200*450 | 200 | 450 | 20 | 4 | 10 | 2.0(0.5+1.5) | 45 | 39 |
| 8"*20" | XM91 200*500 | 200 | 500 | 20 | 4 | 10 | 2.0(0.5+1.5) | 45 | 43 |
| 10"*20" | XM91 250*500 | 250 | 500 | 20 | 4 | 10 | 2.0(0.5+1.5) | 45 | 45 |
| Inch Model | Model | Main Dimensions (mm) | Net Weight (kg) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | I | |||
| 5" | XM51 125 | 125 | 80 | 2.0(0.5+1.5) | 2 | 85 | 10 | M6 | 20 | 50 | 5.3 |
| 6" | XM51 160 | 160 | 115 | 2.0(0.5+1.5) | 2 | 120 | 10 | M8 | 20 | 50 | 8.4 |
| 8" | XM51 200 | 200 | 155 | 2.0(0.5+1.5) | 2 | 160 | 10 | M8 | 20 | 50 | 14 |
| 10" | XM51 250 | 250 | 205 | 2.0(0.5+1.5) | 2 | 200 | 10 | M10 | 20 | 50 | 22 |
| 12" | XM51 300 | 300 | 255 | 2.0(0.5+1.5) | 2 | 250 | 10 | M10 | 20 | 50 | 34.5 |
Selection Notes
Confirm workpiece shape, size, thickness, contact area, required holding stability and machine setup. Then choose between rectangular and circular fine pole series by geometry and mounting requirements.
FAQ
When should I choose a fine pole permanent magnetic chuck?
Choose a fine pole permanent magnetic chuck for small, thin or precision ferromagnetic workpieces that need more uniform magnetic support.
How is it different from a fine pole rectangular electromagnetic chuck?
A fine pole permanent magnetic chuck holds by permanent magnetic force without continuous power, while a fine pole rectangular electromagnetic chuck uses electrical magnetic control.
How do I choose rectangular vs circular specifications?
Choose rectangular fine pole specifications for plates and block-type workpieces, and circular specifications for round, disc or ring-shaped workpieces.
What workpiece thickness and contact area should be checked?
Please confirm the workpiece thickness, size and available magnetic contact area because thin parts and small contact surfaces often require fine pole support.
What machine table or installation interface should be confirmed?
Please confirm the machine table size, mounting surface, required working area and whether the application uses a flat or circular setup.
Is it suitable for thin or precision workpieces?
Yes. Fine pole permanent magnetic chucks are commonly used for thin, small and precision ferromagnetic workpieces that need more even magnetic support.
What should be checked before installation?
Check the mounting flatness, working surface cleanliness, magnetic on-off operation and workpiece coverage on the chuck surface before use.
What information is needed for quotation?
Please provide the workpiece shape, size, thickness, contact area, machine table size and whether rectangular or circular fine pole structure is required.



