Compression Spring
Dimensions
   
Sample data for 1.0 mm wire diameter
No.1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 
Wire
diameter
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
External
diameter
5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70
Central
diameter
4.70 4.70 4.70 4.70 4.70 4.70 4.70 4.70
Internal
diameter 
 3.70 3.70  3.70   3.70  3.70  3.70 3.70  3.70
Free
length 
 8.73 11.85  15.03   18.18 21.26   24.44  27.49 31.05
Total number
of coils 
 3.50  4.50 5.50 6.50 7.50 8.50 9.50 10.50
 Number of
active coils
1.50 2.50 3.50 4.50 5.50 6.50 7.50 8.50
 Spring
pitch
3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00
 Presetting
load(N)
2.54 2.32 2.26 2.17 2.15 2.17 2.08 2.26
Presetting
length 
6.00 8.50 11.0 13.00 15.00 17.50 20.00 22.00
 Both ends
grinding
No No No No No No No No
(mm)

Sample data for 0.5 mm wire diameter
No.1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 
Wire
diameter
0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50
External
diameter
3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00
Central
diameter
2.50 2.50 2.50 2.50 2.50 2.50 2.50 2.50
Internal
diameter 
2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00
Free
length 
4.10 5.60 7.10 8.50 9.90 11.60 13.20 14.80
Total number
of coils 
 3.50  4.50 5.50 6.50 7.50 8.50 9.50 10.50
 Number of
active coils
1.50 2.50 3.50 4.50 5.50 6.50 7.50 8.50
 Spring
pitch
1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20
 Presetting
load(N)
0.56 0.66 0.71 0.63 0.41 0.45 0.43 0.36
Presetting
length 
2.50 3.00 3.50 4.50 7.00 8.00 9.50 11.00
 Both ends
grinding
No No No No No No No No
(mm)

Extension Spring
Dimensions
   
Sample data for 1.0 mm wire diameter
No. 1 No. 2 No. 3 No. 4 No. 5 No. 6 No. 7 No. 8 No. 9 No.10
Wire
diameter
1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
External
diameter
5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70 5.70
Central
diameter
4.70 4.70 4.70 4.70 4.70 4.70 4.70 4.70 4.70 4.70
Internal
diameter 
 3.70  3.70  3.70  3.70  3.70  3.70  3.70  3.70  3.70  3.70
Free
length 
19.70 23.40 29.20 33.80 39.20 44.40 49.50 53.60 59.30 63.50
 Number of
active coils
9.00 13.00 18.00 22.00 27.00 32.00 36.00 41.50 45.50 50.00
 Presetting
load(N)
0.86 0.90 0.93 0.95 1.00 0.95 0.91 0.94 0.95 0.94
Presetting
length 
24.20 29.90 38.20 44.80 52.70 60.40 67.50 74.30 82.00 88.50
(mm)

Copyright (C) 2003-2013 SANWA ENTERPRISE COMPANY, LTD.