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Specification of Mouse Ball and Track Ball
| Mouse Ball: |
Material I : Steel ball wrapped with High Grade Silicone Rubber. ( Heavy Ball ) |
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Standard size: 25.4mm in diameter and 22 mm in diameter. Color : Grey.
Weight : For 25.4mm diameter : 49 gm +/- 1 gm.
For 22.0mm : 26; 28; 31 gm +/- 1 gm.
Material II : Neoprene Rubber ( NBR Light Ball )
Standard size: 22.0mm in diameter.; Color : Black.; Weight: 8/12 gm +/- 0.5 gm
Material III : Steel ball wrapped with Neoprene Rubber. ( NBR Heavy Ball )
Standard size: 20.3mm in diameter. ; Color : Black.; Weight: 19gm+/- 1gm.
Hardness: 70°, Shore A.
Temperature: 200℃
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| Track Ball : |
Material: Polyester. Standard size: 15.8mm in diameter; 25~ 60mm in diameter. |
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Custom size is available upon request.
Color: Blue, Green or specified by Customer.
Hardness: 120°, Shore A.; Durability: 600,000 kilometer. |
Mouse Ball construction:
Inner steel ball is around 3 ~ 4 mm
Smaller than the outer diameter
Depending on various models.
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Application :
Heavy Ball : By the weight of metal ball, to create friction for moving the ball running, then pulling the light wheel for operating the IR couplers working.
Light Ball : Installation on top of keyboard, moving the ball by hand.
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| General Specification: |
Outside diameter tolerance : +/- 0.1mm |
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Roundness : 0.05mm
Wear proof test : 0.0003mm/km
Appearance: No burrs is allowed. Color consistence. |
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