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DELRIN ® CASE STUDY
Delrin ® – for e-bikes
Bikers Enjoy the Ride Longer with
Delrin® e-bike Gears
An e-bike motor manufacturer replaced metal gears with Delrin® to reduce system weight
and noise generation.
What did the customer gain from Delrin®
• Lightweighting for greater maneuverability
• Quieter operation – NVH optimization to meet customer requirements
• High strength gear teeth to transfer torque loads and maximize
output power
• Performance even at raised temperatures – service conditions
up to 100°C
• Excellent wear resistance for continued operation – gears tested
at range of speeds
• Enhanced productivity through injection molding and highly
accurate part dimensions
• Lower cost components (versus metal, PEEK, etc.)
Delrin® 100 gears are shown to match
Gear fatigue limit at 80 °C
the performance of PEEK at 80°C
and to greatly exceed the service life
of unreinforced PA46 across
Torque in Nm
all torque levels
• Speed: max 3000rpm
• Gear size: mn = 2mm
•P
A material tempered
to relieve residual stress
1.E+04
1.E+05
1.E+06
1.E+07
1.E+08
Load Cycles N
Tooth root breakage – Delrin ® 100
Tooth flank breakage – PEEK
Tooth root breakage –PA46
Comparison of the load-carrying capacity of steel-polymer gear pairings for different polymers*
*Hasl, C.: Zur Zahnfußtraglfähigkeit von Kunstoffstirnrädern, Dissertation, Technische Universtät
München (2019.) (engl.: tooth root load carrying capacity of polymer spur gears)
Delrin – Engineering the Future, Together
To learn more, contact your Delrin representative or visit Delrin.com..
Delrin® is an industry-leading premium industrial polymer business. Grounded in strong innovation, Delrin is a category creator with a longstanding reputation for quality, reliability, supply and
product performance. The iconic Delrin brand, coupled with proprietary technology and deep application expertise, make us a leader in the high-end engineering polymer market. Delrin has exciting growth prospects from exposure to automation, actuation, healthcare, mobility and consumer applications.
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