Ferrite magnet

Cap magnet

Cap magnets are applied magnets that combine a ferrite magnet and a yoke (iron) to concentrate magnetic force in a certain direction, making it even stronger.It can be easily installed using the holes in the yoke (types without holes are also available).

Round type (R type)

Unit: mm

* Cap material is SPCC * Adsorption power is a reference value (measured with Imada digital force gauge)

surface treatment

1) Zinc plating/chromate treatment 2) Zinc plating/unichromate treatment 

Part number OD x H x [ID] T Adsorption power surface treatment Remarks
N kgf
12R 12.3φ x 3.7 0.5 3.92 0.4 2)  
16R 16φ x 3 (2.7φ) 0.7 5.88 0.6 2)  
18R 17.5φ x 5 0.7 11.77 1.2 2)  
B18R 17.5φ x 5 0.7 3.92 0.4 2) Isotropic ferrite
20R 19.8φ x 4 (3.5φ) 0.8 11.77 1.2 2)  
23RH 22.8φ x 5.2 (5φ) 0.8 17.65 1.8 2)  
24R 23.5φ x 5 0.7 23.54 2.4 2)  
B24R 23.5φ x 5 0.7 6.86 0.7 2) Isotropic ferrite
25R 25.5φ x 5 (3.2φ) 0.8 24.52 2.5 1)  
28R 28.8φ x 5.6 1.0 33.34 3.4 2)  
B28R 28.8φ x 5.6 1.0 14.71 1.5 2) Isotropic ferrite
32R 31.5φ x 4.7 (4.3φ) 0.8 44.13 4.5 2)  
B32R 31.5φ x 4.7 0.8 15.69 1.6 2) Isotropic ferrite
36R 36φ x 7.3 1.6 83.36 8.5 2)  
36RH 36φ x 7.3 (4.2φ) 1.6 68.65 7.0 2)  
44R 44φ x 8 (M4) 1.6 117.68 12.0 2)  
B44R 44φ x 8 (M4) 1.6 36.28 3.7 2) Isotropic ferrite
50R 50φ x 8.5 (5φ) 1.6 147.10 15.0 2)  
52R 51.5φ x 7.9 (4.9φ) 1.6 156.91 16.0 1)  
66R 66φ x 9.8 (9.5φ) 2.0 245.17 25.0 1)  
66RS 66φ x 9.8 (6.2φ) 2.0 245.17 25.0 1)  
77R 76.5φ x 11 (6.2φ) 2.0 343.23 35.0 1)  
80R 80φ x 12.7 (10.2φ) 2.0 392.27 40.0 1)  
98R 98φ x 12.5 (9.5φ) 2.0 539.37 55.0 1)  
125R 124.5φ x 12.4 (12.7φ) 2.0 784.53 80.0 1)  

Round type (R type, Usu type)

Part number OD x H x [ID] T Adsorption power surface treatment
N kgf
46RH 46φ x 4.7 (5φ) 1.2 147.10 15.0 Galvanized / unichromate treatment

Square type (L type)

60L with grooves on both sides

Unit: mm

Part number L × W × H T Adsorption power surface treatment Remarks
N kgf
20L 20 × × 8.4 4.2 0.6 7.85 0.8 2)  
24L 24 × × 12 5.1 0.8 19.61 2.0 2)  
25LH 25.5 x 23.5 x 6.7 (6φ) 1.6 44.13 4.5 2)  
25L 25.5 × × 23.5 6.5 1.4 58.84 6.0 2)  
26L 25.5 × × 11 6.5 1.0 19.61 2.0 2)  
36L 36 × × 21 6 1.0 49.03 5.0 2)  
43LH 43 x 30.2 x 7 (6φ) 1.6 93.16 9.5 2)  
43L 42.8 × × 28 6.5 1.2 127.49 13.0 1)  
45L 45 × × 30 7 1.6 127.49 13.0 2)  
49L 49 × × 41 13 2.0 196.13 20.0 2)  
49LH 49 x 41 x 12.8 (M5) 2.0 196.13 20.0 2)  
60L 60 × × 23.4 6.8 1.4 112.78 11.5 2) With grooves on both sides
79L 79 × × 38 13 2.0 186.33 19.0 2) With grooves on both sides

* Cap material is SPCC * Adsorption power is a reference value (measured with Imada digital force gauge)
* Since the magnetic flux is concentrated on the tip S of the cap, the suction force is 5 to 10 times that of the magnet alone.
1) Galvanization / chromemate treatment 2) Galvanization / unichromate treatment

Square type (L type, with holes on both sides)

70L with holes on both sides

90L with holes on both sides

Unit: mm

Part number L × W × H T Adsorption power surface treatment Remarks
  N kgf
70L 69.9 x 29.7 x 13.2 (5φ x 2) 2.6 98.07 10.0 Nickel plating With 5φ holes on both sides 1)
90L 90 x 18.8 x 6 (3.5φ x 2) 1.2 88.26 9.0 2) With 3.5φ holes on both sides

The material of the cap is SPCC
* Adsorption power is a reference value (measured with Imada's digital force gauge)
* Since the magnetic flux is concentrated on the tip S of the cap, the suction force is 5 to 10 times that of the magnet alone.
1) Limited stock available 2) Galvanized/Unichromate treatment

Square type (L special type)

Unit: mm

28LF with double-sided tape

47LP with 2 claws on one side

Part number L × W × H T Adsorption power surface treatment Remarks
N kgf
28LF 28.5 × × 15.5 4.5 1.2 29.42 3.0 1) With double-sided tape
43.5L 43.5 × × 30.1 7 1.5 53.94 5.5 2) With double-sided tape and protective film
50L 50 x 27 x 12 (5φ x 2) 1.6 137.29 14.0 2) 4 M2 countersunk holes
45LP 45 × × 30 7 1.6 73.55 7.5 2) With double-sided tape and protective film
47LP 46.8 × × 30 7.7 1.8 53.94 5.5 2) With protective film, with 2 claws on one side 3)
51LP 51 × × 30.4 7 1.5 88.26 9.0 2) with protective film 3)

* Cap material is SPCC, 50L hole pitch is 25, double-sided tape is XNUMXM Japan VHB tape specification.
* Adsorption power is a reference value (measured with Imada's digital force gauge)
1) Zinc plating/Chromemate treatment 2) Zinc plating/Unichromate treatment 3) Limited stock