The Rowland Company
4900 North 20th Street
Philadelphia, PA 19144
Toll Free: 800-925-8824   Phone: 215-455-4900    Fax: 215-455-8888
E-Mail: rowland@rowland2.com    Web site: www.rowlandcompany.com
All Categories > Friction Materials > Woven Brake Lining Materials > Item # 4281  


Item # 4281, Gemini Woven Non-Asbestos Material

Gemini woven is a non-asbestos woven product for heavy-duty industrial applications. It exhibits nearly constant friction level up to 500 ºF. It also shows full recovery by 400 ºF. Gemini can be used on wet/ dry band brakes for industrial use where medium to high friction is required. The product is available in roll form, flat sheet, and custom shapes.





Mechanical Properties  · Frictional Properties  · Characteristics  · Note

Mechanical Properties

Specific Gravity (SAE J380)
1.12

Minimum Tensile Strength (ASTM D638)
1500 psi


Frictional Properties

Normal Coefficient of Friction (SAE J661)
0.51

Hot Coefficient of Friction (SAE J661)
0.44

Maximum Wear Rate (SAE J661)
0.005 in³/hp-hr

Friction Code
GF

Maximum Operating Rubbing Speed Limits
5000 ft/min

Maximum Operating Pressure Limits
200 psi

Drum Temperature for Constant Operation
550 ºF


Characteristics
  • High Static friction
  • Uniform friction
  • Non-ferrous metallic
  • Immediate and complete recovery
  • Good wear rate


Note
For Normal and Hot Coefficient of Friction (SAE J661):
Friction values shown are for guide purposes only since values deviate with changes in temperature, pressure and speed. Practical design should include a 25 to 50 percent safety factor.

For Maximum Operating Rubbing Speed and Pressure Limits:
Rubbing speed, drum temperature, and pressure are directly related. Changing any one value will change the others. The values shown represent typical conditions, but are not the ultimate limits of the material.

For Drum Temperature for Constant Operation:
Rubbing speed, drum temperature, and pressure are directly related. Changing any one value will change the others. The values shown represent typical conditions, but are not the ultimate limits of the material.