Specifications

*Unique competence in making clock spiral spring
*Short lead time
*RoHS approval
*IS 9001 & 14001
*More than 12 years

1.  Constant Force Spring

 

Constant Force Spring is a roll of pre-stressed Type 301 Stainless Steel strip which exerts a nearly constant restraining force to resist uncoiling. When the strip is extended, the inherent stress resists the loading force at a nearly constant rate. In use, the spring is usually mounted by tightly wrapping it on a drum. The free end is then attached to the loading force such as in a counterbalance application. This relationship can also be reversed. Typical applications include brush springs for motors, counterbalance springs for window sashes, and carriage return springs for typewriters. If the spring is mounted on a drum, the drum diameter should be 10 to 20 percent larger than its natural diameter. One and one-half wraps should remain on the drum at maximum extension. The strip becomes unstable at long extensions and should be guided to prevent twisting or kinking on recoil. Idler pulleys must be larger in diameter than the natural diameter and should never be used to cause back-bending against the natural radius of curvature.

 

2.Specifications

 

Product Name	Drill Press Spring
Fit for	19" Drill Presses
Total Size	6.3 x 1.8cm / 2.5" x 0.7"(Max.D*T)
Color	See the Picture
Material	Metal
Net Weight	171g
Package Content	1 x Drill Press Spring

Description:

• The drill press quill return spring is good replacement for many existing quill spring on 19" drill presses, this is the chrome housed spring that returns the quill to the top after you have completed drilling.
• Used to all kinds of vacuum cleaner coil spring, volume tube coil spring, safety belt coil spring.

 

 

 

 

 

 

3.How to place an order?

1. You can send us your drawing or sample for checking first.

2. We provide your an exact quote.

3. When confirmed our price, we prepare the sample.

4.After confirming the sample, you can place an order.

5.Beginning mass production after receiving 60% down payment.

6.Delivering the goods after receiving the balance.

 

4.Welcome RFQ for OEM service

Please send us below details, and we will feedback to you with price within one day:

1) material, generally speaking, stainless steel and carbon steel will be used.

2) size ( thickness, length, width)

3) the internal diameter of case and the shaft diameter

4) the torque, used range and the used life you need

4) quantity, the MOQ of the company is 5,000pcs

5) drawings or sample

 

5.Certification approval

 

 

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