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Counterbalance Spring Specification Form

Spring Data

1.) Edges of coil must not vary more than .8 from a straight line.
2.) Spring must have a spiral form.
3.) Ends may be selectively annealed for forming.
4.) No noise or chatter permissible in the first 50 cycles.

5.) Spring must complete

cycles.

6.) Spring must retain 80% of the original torque specification after cycle test.

7.) Spring must be tested over a

diameter stud, with a

stud.

Dimensional Characteristics

A.)

B.)

C.)

D.)

E.)

F.)

H.)

I.)

J.)

K.)

L.)

M.)

N.)

R.)

S.)

Torque Specifications

Note: After winding five times to position "B" plus 5 degrees, spring must have the following outputs.

1.) At position "B"

2.) At position "A"

3.) Load to be checked with outer hook anchored at

Lubricant Specifications

1.) Grease:

2.) Phosphate & Soap:

3.) Teflon:

Material Specifications

1.) SAE 1060-1066 round edge oil tempered spring steel:

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