Helwig offers replacement spring assemblies for virtually every type of constant force brush holder, including turbine ring magazines. Our spring assemblies are designed to meet or exceed the performance of the original part. We also replace springs on existing back plates. Over 40 popular style are carried in stock.
· Engineered to give optimal performance for your equipment
· Designed improve brush life and lower maintenance costs
· Helwig Carbon carries over 35 common styles in stock
· Custom made springs available in days
Exclusive Built-In Wear Indicator
An optional wear device is available with selected springs to easily detect when carbon brush should be replaced.
Spring Repair:
Did you know that we can replace the springs on your existing clips?
Just send in the old clips and we can put on new rollers/springs. Make sure you include an old brush
or part number. The brush size, style, and RPM determine the spring force.
Spring Pressure (PSI) = Measured Force (LBS)
Brush Thickness X Brush Width
Recommended Range of Spring Pressures
Having the proper spring pressure is as important as the grade of brush. See below for a chart showing the proper spring pressure for the different types of applications.
|
Brush Type |
Pounds per
Square Inch |
Grams per Square
Centimeter |
|
Industrial D.C. Applications |
4.0-6.0 |
280-420 |
|
WRIM & Sync Rings |
3.5-4.5 |
240-310 |
|
High Speed Turbine Rings, Soft Graphite Grades |
2.5-3.5 |
170-240 |
|
Metal Graphite Brushes |
4.5-5.5 |
310-390 |
|
FHP Brushes |
4.0-7.0 |
280-490 |
|
Traction Brushes |
5.0-8.0 |
350-560 |
Top and Bottom Bevels contribute to loss of Spring Pressure
Angle in Degrees Loss of Force
|
5 |
.40% |
|
10 |
1.50% |
|
15 |
3.40% |
|
20 |
6.00% |
|
25 |
9.40% |
|
30 |
13.40% |
|
35 |
18.10% |
|
40 |
23.40% |
Many OEM springs just need a slight improvement. The majority of springs come from the factory already undersized (LBS) for the size of the brush. We try to enhance the design in order to achieve the best brush life possible. Spring pressure is so important that it can have a dramatic affect on brush life.
For orders and inquiries, please contact the Special Products Division at:
Phone: 888-698-6169
Fax: 888-698-6092
Email: techsquad@helwigcarbon.com
To view our Online Catalog, click here
