Product Overview
A Plastic Spiral Bevel Gear transmits rotation between intersecting shafts, commonly at 90°. Its curved teeth are used in compact right-angle drives such as power-fold mirrors, small actuators, instrument mechanisms, and other assemblies where engagement needs to be smoother than with a straight bevel pair.
Key Advantages
Progressive Contact Across the Curved Tooth
Contact builds gradually across the curved tooth face instead of striking the full width at once. In a right-angle actuator, this reduces the engagement pulse that produces vibration and tonal gear noise.
Matched Geometry for Intersecting Shafts
The pinion and gear share the same shaft angle and mounting distance. This keeps the contact path within the working face and prevents load from concentrating at one edge.
Positive Torque Connection at the Hub
A keyed, D-shaped, or insert-supported bore transfers torque through a positive connection rather than friction alone. The hub connection remains defined when the mechanism starts or reverses under load.
Technical Data Table
|
Parameter |
Value |
|
Spiral Angle |
30 degrees |
|
Big End Diameter |
45 mm |
|
Small End Width |
25 mm |
|
Center Hole |
10 mm with keyway |
|
Material |
Oil-filled nylon |
Customization Capabilities
The pinion and gear are developed as one matched right-angle pair. Shaft angle, ratio, spiral hand, and mounting distance are fixed together to keep the contact path within the working face.
The hub interface can be made for a keyed, D-shaped, or insert-supported shaft. Material and lubrication are chosen for sliding contact, operating speed, and enclosure space.
Quality Control
First-piece approval uses the matched pair to verify spiral hand, mounting distance, and the position of the tooth contact pattern. The contact pattern shows whether the load reaches the intended face area.
The pair is then run at the specified shaft angle. The test checks smooth torque transfer, controlled backlash, and acceptable operating noise.
FAQ
Q: Can a sample set be supplied before production?
A: Yes. A matched sample set can be produced after the gear data and mounting arrangement are confirmed. Custom sample development normally takes about 50 days.
Q: Which payment currencies are accepted?
A: USD, EUR, CNY, GBP, AUD, CAD, KRW, and RUB are accepted under the agreed payment term.
Q: Are the pinion and gear supplied as a matched set?
A: A matched set is recommended because spiral hand, mounting distance, ratio, and contact pattern must correspond. Pair identification can be added for assembly control.
Q: What rotation information is required?
A: Specify the input shaft, output shaft, viewing direction, rotation direction, and bearing arrangement. These details determine the spiral hand and the direction of axial thrust.
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