Marswell Engineering Ltd.

Transcription

1 Marswell Engineering Ltd. Specialized in small module plastic gearing and gearbox Automated injection molding and molds for any small, precision component.

2 Table of content page table of content i Background Our business and service Product Stock gear 0.3/0.4/0.5 motor gear spur gear spur gear 0.5 spur gear 0.3 compound gear teeth 8 8 teeth 9 9 teeth teeth teeth compound gear teeth 8 13 teeth 9 14 teeth teeth 12 1 teeth compound gear teeth 8 18 teeth 9 19 teeth teeth teeth worm & worm gear worm & worm gear 24 Planetary gearhead 25 Reference material 1.1 Basic geometry of involute gear Gear formula of spur gear Gear train Conversion of SI unit 29 i

3 Background MARSWELL ENGINEERING LIMITED has found in Hong Kong in We have substantial experience in small module plastic gearing and gearbox, automated injection molding, and molds and moldings for any small, precision component. We are one of the minority companies who still committed to have an advanced manufacturing plant with high quality machinery in Hong Kong. Our in-house production team supports the production line and cope with customers' needs for better business cooperation. We have a full complement of equipments including Swiss hobbing machine, Japanese CNC, EDM and injection machine for quality and shorten the production lead-time. Striving toward your goal! It's our commitment to the customer. We would like to strive keening on the competitive and opening up new opportunities in the advanced technologies with our customer. We believe that our professional support and well-organized management can definitely fulfill all our customers' needs. 1

4 Our business and service 1/ R & D and mold design As the necessary of technology development, we enhance the resource in R&D department since With the comprehensive experience and adequate training, we strengthen our productivity and the competition in reducing the tooling cost, shortening the production lead-time and adding the value of the products. 2/ Fabrication process and plastic injection We review the custom design for building the molds for plastic injections regarding the shrinkage and wrap issues during the production. 3/ Quality production leadtime and quality control Based on the precision moldings, we believe the production would be going smoothly. Also, we would analyze and minimize the noise from the gear or the products before shipment. We adopt the international level as the testing standard. 4/ On-time delivery 5/ Professional enquiry We will take a promptly response to the worldwide customers with profession technical support and solution for better cooperation. 2

5 Product MARSWELL mainly specializes in small module plastic gearing and gearbox, automated injection molding, and molds and moldings for any small, precision component. 1/ Small module plastic gear and gearbox Our small module plastic gear and gearbox range from 0.1M to 0.5M of tailor made gear. Plastic gears are capable of matching the high temperature, high power functionality of metal gears. It is an inexpensive solution. They can be applied for automotive, consumer electronics, healthcare, appliance, electric motors, toy, and gears for assembly, timing devices etc. 2/ Stock gear We standardized our stock gear mainly range from 0.3M to 0.5M. All gear is made by Acetal resin (POM). POM is good in strength of bending, low coefficient of friction, low noise level and outstanding anti- organic properties. They can be applied for DVDs, watches, toys, electronic appliances etc. It is short lead time and cost effective. The tooling cost is free for existing items and modifying of bore sizes. It leads quality and shortens production lead time for your product launching and promotion. For detail, please go to page 4 to 24. 3/ Planetary gear head The gearhead get reduction with high torque and low RPM (revolutions per minute) for loadcarrying capacity. It can be applied for some precision and micro systems, such as production automation, medical equipment, security devices and robotics etc. For detail, please go to page 25. 3

6 0.3/ 0.4/ 0.5 MOTOR GEAR Teeth Range : 8 < Z < 18 Module : 0.3/ 0.4/ 0.5 Pressure angle = 20 Material : POM Module No of teeth Bore Pitch dia. Outside dia. Face width m Z A B C D MM All* /5 MM All* /5 MM All* /5 MM All* /5 MM All* /5 MM All* /5 MM All* /5 MM All* /5 MM All* 4 5 5// MM All* 5.5 5/ MM All* 5 5// MM All* 5// MM All*.5.5 5/ MM All* 8 5/ MM All* / MM All* 8 9 5/ MM All* / 1.4,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 4

7 0.3 SPUR GEAR Teeth Range : 20 < Z < 0 Module : 0.3 Pressure angle = 20 Material : POM No of teeth Bore Pitch dia. Outside dia. Face width Hub width Total length Z B C D E F G MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 5

8 0.4 SPUR GEAR Teeth Range : 20 < Z < 0 Module : 0.4 Pressure angle = 20 Material : POM No of teeth Bore Pitch dia. Outside dia. Face width Hub width Total length Z B C D E F G MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes.

9 0.5 SPUR GEAR Teeth Range : 20 < Z < 0 Module : 0.5 Pressure angle = 20 Material : POM No of teeth Bore Pitch dia. Outside dia. Face width Hub width Total length Z B C D E F G MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* MS All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes.

10 0.3 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.3 : Z 1 = 8 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.3-8/24 8/24 All* MCG0.3-8/25 8/25 All* MCG0.3-8/2 8/2 All* MCG0.3-8/28 8/28 All* MCG0.3-8/30 8/30 All* MCG0.3-8/32 8/32 All* MCG0.3-8/34 8/34 All* MCG0.3-8/35 8/35 All* MCG0.3-8/3 8/3 All* MCG0.3-8/38 8/38 All* MCG0.3-8/40 8/40 All* MCG0.3-8/42 8/42 All* MCG0.3-8/44 8/44 All* MCG0.3-8/45 8/45 All* MCG0.3-8/4 8/4 All* MCG0.3-8/48 8/48 All* MCG0.3-8/50 8/50 All* MCG0.3-8/52 8/52 All* MCG0.3-8/54 8/54 All* MCG0.3-8/55 8/55 All* MCG0.3-8/5 8/5 All* MCG0.3-8/58 8/58 All* MCG0.3-8/0 8/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 8

11 0.3 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.3 : Z 1 = 9 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.3-9/24 9/24 All* MCG0.3-9/25 9/25 All* MCG0.3-9/2 9/2 All* MCG0.3-9/28 9/28 All* MCG0.3-9/30 9/30 All* MCG0.3-9/32 9/32 All* MCG0.3-9/34 9/34 All* MCG0.3-9/35 9/35 All* MCG0.3-9/3 9/3 All* MCG0.3-9/38 9/38 All* MCG0.3-9/40 9/40 All* MCG0.3-9/42 9/42 All* MCG0.3-9/44 9/44 All* MCG0.3-9/45 9/45 All* MCG0.3-9/4 9/4 All* MCG0.3-9/48 9/48 All* MCG0.3-9/50 9/50 All* MCG0.3-9/52 9/52 All* MCG0.3-9/54 9/54 All* MCG0.3-9/55 9/55 All* MCG0.3-9/5 9/5 All* MCG0.3-9/58 9/58 All* MCG0.3-9/0 9/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 9

12 0.3 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.3 : Z 1 = 10 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.3-10/24 10/24 All* MCG0.3-10/25 10/25 All* MCG0.3-10/2 10/2 All* MCG0.3-10/28 10/28 All* MCG0.3-10/30 10/30 All* MCG0.3-10/32 10/32 All* MCG0.3-10/34 10/34 All* MCG0.3-10/35 10/35 All* MCG0.3-10/3 10/3 All* MCG0.3-10/38 10/38 All* MCG0.3-10/40 10/40 All* MCG0.3-10/42 10/42 All* MCG0.3-10/44 10/44 All* MCG0.3-10/45 10/45 All* MCG0.3-10/4 10/4 All* MCG0.3-10/48 10/48 All* MCG0.3-10/50 10/50 All* MCG0.3-10/52 10/52 All* MCG0.3-10/54 10/54 All* MCG0.3-10/55 10/55 All* MCG0.3-10/5 10/5 All* MCG0.3-10/58 10/58 All* MCG0.3-10/0 10/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 10

13 0.3 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.3 : Z 1 = 12 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.3-12/24 12/24 All* MCG0.3-12/25 12/25 All* MCG0.3-12/2 12/2 All* MCG0.3-12/28 12/28 All* MCG0.3-12/30 12/30 All* MCG0.3-12/32 12/32 All* MCG0.3-12/34 12/34 All* MCG0.3-12/35 12/35 All* MCG0.3-12/3 12/3 All* MCG0.3-12/38 12/38 All* MCG0.3-12/40 12/40 All* MCG0.3-12/42 12/42 All* MCG0.3-12/44 12/44 All* MCG0.3-12/45 12/45 All* MCG0.3-12/4 12/4 All* MCG0.3-12/48 12/48 All* MCG0.3-12/50 12/50 All* MCG0.3-12/52 12/52 All* MCG0.3-12/54 12/54 All* MCG0.3-12/55 12/55 All* MCG0.3-12/5 12/5 All* MCG0.3-12/58 12/58 All* MCG0.3-12/0 12/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 11

14 0.3 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.3 : Z 1 = 14 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.3-14/24 14/24 All* MCG0.3-14/25 14/25 All* MCG0.3-14/2 14/2 All* MCG0.3-14/28 14/28 All* MCG0.3-14/30 14/30 All* MCG0.3-14/32 14/32 All* MCG0.3-14/34 14/34 All* MCG0.3-14/35 14/35 All* MCG0.3-14/3 14/3 All* MCG0.3-14/38 14/38 All* MCG0.3-14/40 14/40 All* MCG0.3-14/42 14/42 All* MCG0.3-14/44 14/44 All* MCG0.3-14/45 14/45 All* MCG0.3-14/4 14/4 All* MCG0.3-14/48 14/48 All* MCG0.3-14/50 14/50 All* MCG0.3-14/52 14/52 All* MCG0.3-14/54 14/54 All* MCG0.3-14/55 14/55 All* MCG0.3-14/5 14/5 All* MCG0.3-14/58 14/58 All* MCG0.3-14/0 14/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 12

15 0.4 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.4 : Z 1 = 8 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.4-8/24 8/24 All* MCG0.4-8/25 8/25 All* MCG0.4-8/2 8/2 All* MCG0.4-8/28 8/28 All* MCG0.4-8/30 8/30 All* MCG0.4-8/32 8/32 All* MCG0.4-8/34 8/34 All* MCG0.4-8/35 8/35 All* MCG0.4-8/3 8/3 All* MCG0.4-8/38 8/38 All* MCG0.4-8/40 8/40 All* MCG0.4-8/42 8/42 All* MCG0.4-8/44 8/44 All* MCG0.4-8/45 8/45 All* MCG0.4-8/4 8/4 All* MCG0.4-8/48 8/48 All* MCG0.4-8/50 8/50 All* MCG0.4-8/52 8/52 All* MCG0.4-8/54 8/54 All* MCG0.4-8/55 8/55 All* MCG0.4-8/5 8/5 All* MCG0.4-8/58 8/58 All* MCG0.4-8/0 8/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 13

16 0.4 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.4 : Z 1 = 9 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.4-9/24 9/24 All* MCG0.4-9/25 9/25 All* MCG0.4-9/2 9/2 All* MCG0.4-9/28 9/28 All* MCG0.4-9/30 9/30 All* MCG0.4-9/32 9/32 All* MCG0.4-9/34 9/34 All* MCG0.4-9/35 9/35 All* MCG0.4-9/3 9/3 All* MCG0.4-9/38 9/38 All* MCG0.4-9/40 9/40 All* MCG0.4-9/42 9/42 All* MCG0.4-9/44 9/44 All* MCG0.4-9/45 9/45 All* MCG0.4-9/4 9/4 All* MCG0.4-9/48 9/48 All* MCG0.4-9/50 9/50 All* MCG0.4-9/52 9/52 All* MCG0.4-9/54 9/54 All* MCG0.4-9/55 9/55 All* MCG0.4-9/5 9/5 All* MCG0.4-9/58 9/58 All* MCG0.4-9/0 9/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 14

17 0.4 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.4 : Z 1 = 10 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.4-10/24 10/24 All* MCG0.4-10/25 10/25 All* MCG0.4-10/2 10/2 All* MCG0.4-10/28 10/28 All* MCG0.4-10/30 10/30 All* MCG0.4-10/32 10/32 All* MCG0.4-10/34 10/34 All* MCG0.4-10/35 10/35 All* MCG0.4-10/3 10/3 All* MCG0.4-10/38 10/38 All* MCG0.4-10/40 10/40 All* MCG0.4-10/42 10/42 All* MCG0.4-10/44 10/44 All* MCG0.4-10/45 10/45 All* MCG0.4-10/4 10/4 All* MCG /48 All* MCG0.4-10/50 10/50 All* MCG0.4-10/52 10/52 All* MCG0.4-10/54 10/54 All* MCG0.4-10/55 10/55 All* MCG0.4-10/5 10/5 All* MCG0.4-10/58 10/58 All* MCG0.4-10/0 10/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 15

18 0.4 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.4 : Z 1 = 12 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.4-12/24 12/24 All* MCG0.4-12/25 12/25 All* MCG0.4-12/2 12/2 All* MCG0.4-12/28 12/28 All* MCG0.4-12/30 12/30 All* MCG0.4-12/32 12/32 All* MCG0.4-12/34 12/34 All* MCG0.4-12/35 12/35 All* MCG0.4-12/3 12/3 All* MCG0.4-12/38 12/38 All* MCG0.4-12/40 12/40 All* MCG0.4-12/42 12/42 All* MCG0.4-12/44 12/44 All* MCG0.4-12/45 12/45 All* MCG0.4-12/4 12/4 All* MCG0.4-12/48 12/48 All* MCG0.4-12/50 12/50 All* MCG0.4-12/52 12/52 All* MCG0.4-12/54 12/54 All* MCG0.4-12/55 12/55 All* MCG0.4-12/5 12/5 All* MCG0.4-12/58 12/58 All* MCG0.4-12/0 12/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 1

19 0.4 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.4 : Z 1 = 14 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.4-14/24 14/24 All* MCG0.4-14/25 14/25 All* MCG0.4-14/2 14/2 All* MCG0.4-14/28 14/28 All* MCG0.4-14/30 14/30 All* MCG0.4-14/32 14/32 All* MCG0.4-14/34 14/34 All* MCG0.4-14/35 14/35 All* MCG0.4-14/3 14/3 All* MCG0.4-14/38 14/38 All* MCG0.4-14/40 14/40 All* MCG0.4-14/42 14/42 All* MCG0.4-14/44 14/44 All* MCG0.4-14/45 14/45 All* MCG0.4-14/4 14/4 All* MCG0.4-14/48 14/48 All* MCG0.4-14/50 14/50 All* MCG0.4-14/52 14/52 All* MCG0.4-14/54 14/54 All* MCG0.4-14/55 14/55 All* MCG0.4-14/5 14/5 All* MCG0.4-14/58 14/58 All* MCG0.4-14/0 14/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 1

20 0.5 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.5 : Z 1 = 8 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.5-8/24 8/24 All* MCG0.5-8/25 8/25 All* MCG0.5-8/2 8/2 All* MCG0.5-8/28 8/28 All* MCG0.5-8/30 8/30 All* MCG0.5-8/32 8/32 All* MCG0.5-8/34 8/34 All* MCG0.5-8/35 8/35 All* MCG0.5-8/3 8/3 All* MCG0.5-8/38 8/38 All* MCG0.5-8/40 8/40 All* MCG0.5-8/42 8/42 All* MCG0.5-8/44 8/44 All* MCG0.5-8/45 8/45 All* MCG0.5-8/4 8/4 All* MCG0.5-8/48 8/48 All* MCG0.5-8/50 8/50 All* MCG0.5-8/52 8/52 All* MCG0.5-8/54 8/54 All* MCG0.5-8/55 8/55 All* MCG0.5-8/5 8/5 All* MCG0.5-8/58 8/58 All* MCG0.5-8/0 8/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 18

21 0.5 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.5 : Z 1 = 9 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.5-9/24 9/24 All* MCG0.5-9/25 9/25 All* MCG0.5-9/2 9/2 All* MCG0.5-9/28 9/28 All* MCG0.5-9/30 9/30 All* MCG0.5-9/32 9/32 All* MCG0.5-9/34 9/34 All* MCG0.5-9/35 9/35 All* MCG0.5-9/3 9/3 All* MCG0.5-9/38 9/38 All* MCG0.5-9/40 9/40 All* MCG0.5-9/42 9/42 All* MCG0.5-9/44 9/44 All* MCG0.5-9/45 9/45 All* MCG0.5-9/4 9/4 All* MCG0.5-9/48 9/48 All* MCG0.5-9/50 9/50 All* MCG0.5-9/52 9/52 All* MCG0.5-9/54 9/54 All* MCG0.5-9/55 9/55 All* MCG0.5-9/5 9/5 All* MCG0.5-9/58 9/58 All* MCG0.5-9/0 9/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 19

22 0.5 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.5 : Z 1 = 10 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.5-10/24 10/24 All* MCG0.5-10/25 10/25 All* MCG0.5-10/2 10/2 All* MCG0.5-10/28 10/28 All* MCG0.5-10/30 10/30 All* MCG0.5-10/32 10/32 All* MCG0.5-10/34 10/34 All* MCG0.5-10/35 10/35 All* MCG0.5-10/3 10/3 All* MCG0.5-10/38 10/38 All* MCG0.5-10/40 10/40 All* MCG0.5-10/42 10/42 All* MCG0.5-10/44 10/44 All* MCG0.5-10/45 10/45 All* MCG0.5-10/4 10/4 All* MCG0.5-10/48 10/48 All* MCG0.5-10/50 10/50 All* MCG0.5-10/52 10/52 All* MCG0.5-10/54 10/54 All* MCG0.5-10/55 10/55 All* MCG0.5-10/5 10/5 All* MCG0.5-10/58 10/58 All* MCG0.5-10/0 10/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 20

23 0.5 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.5 : Z 1 = 12 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.5-12/24 12/24 All* MCG0.5-12/25 12/25 All* MCG0.5-12/2 12/2 All* MCG0.5-12/28 12/28 All* MCG0.5-12/30 12/30 All* MCG0.5-12/32 12/32 All* MCG0.5-12/34 12/34 All* MCG0.5-12/35 12/35 All* MCG0.5-12/3 12/3 All* MCG0.5-12/38 12/38 All* MCG0.5-12/40 12/40 All* MCG0.5-12/42 12/42 All* MCG0.5-12/44 12/44 All* MCG0.5-12/45 12/45 All* MCG0.5-12/4 12/4 All* MCG0.5-12/48 12/48 All* MCG0.5-12/50 12/50 All* MCG0.5-12/52 12/52 All* MCG0.5-12/54 12/54 All* MCG0.5-12/55 12/55 All* MCG0.5-12/5 12/5 All* MCG0.5-12/58 12/58 All* MCG0.5-12/0 12/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 21

24 0.5 COMPOUND GEAR Teeth Range Module Teeth No. Pressure angle Material : 24 < Z 2 < 0 : 0.5 : Z 1 = 14 = 20 : POM No of teeth Bore Pitch dia. Outside dia. Pitch dia. Outside dia. Gear width Pinion width Total length Z 1 / Z 2 A B C D E F G H MCG0.5-14/24 14/24 All* MCG0.5-14/25 14/25 All* MCG0.5-14/2 14/2 All* MCG0.5-14/28 14/28 All* MCG0.5-14/30 14/30 All* MCG0.5-14/32 14/32 All* MCG0.5-14/34 14/34 All* MCG0.5-14/35 14/35 All* MCG0.5-14/3 14/3 All* MCG0.5-14/38 14/38 All* MCG0.5-14/40 14/40 All* MCG0.5-14/42 14/42 All* MCG0.5-14/44 14/44 All* MCG0.5-14/45 14/45 All* MCG0.5-14/4 14/4 All* MCG0.5-14/48 14/48 All* MCG0.5-14/50 14/50 All* MCG0.5-14/52 14/52 All* MCG0.5-14/54 14/54 All* MCG0.5-14/55 14/55 All* MCG0.5-14/5 14/5 All* MCG0.5-14/58 14/58 All* MCG0.5-14/0 14/0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 22

25 0.4 WORM & WORM GEAR Catalog No.: MW0.4-1 Teeth Range : 10 < Z 2 < 0 Module Ma : 0.4 No. of thread : Z 1= 1 Pressure angle = 20 Material : POM Hand of No of teeth Bore Pitch dia. Outside dia. Hub width Face width Total length thread Z A B C D E F MWG R 10 All* MWG R 12 All* MWG R 14 All* 5..4 MWG0.4-1 R 1 All*.4.2 MWG R 18 All*.2 8 MWG R 20 All* MWG R 22 All* MWG R 24 All* MWG0.4-2 R 2 All* MWG R 28 All* MWG R 30 All* MWG R 32 All* MWG R 34 All* MWG0.4-3 R 3 All* MWG R 38 All* MWG R 40 All* MWG R 42 All* MWG R 44 All* MWG0.4-4 R 4 All* MWG R 48 All* MWG R 50 All* MWG R 52 All* MWG R 54 All* MWG0.4-5 R 5 All* MWG R 58 All* MWG0.4-0 R 0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 23

26 0.5 WORM & WORM GEAR Catalog No.: MW0.5-1 Teeth Range : 10 < Z 2 < 0 Module Ma : 0.5 No. of thread : Z 1= 1 Pressure angle = 20 Material : POM Hand of No of teeth Bore Pitch dia. Outside dia. Hub width Face width Total length thread Z A B C D E F MWG R 10 All* 5 MWG R 12 All* MWG R 14 All* 8 MWG0.5-1 R 1 All* 8 9 MWG R 18 All* 9 10 MWG R 20 All* MWG R 22 All* MWG R 24 All* MWG0.5-2 R 2 All* MWG R 28 All* MWG R 30 All* 15 1 MWG R 32 All* 1 1 MWG R 34 All* 1 18 MWG0.5-3 R 3 All* MWG R 38 All* MWG R 40 All* MWG R 42 All* MWG R 44 All* MWG0.5-4 R 4 All* MWG R 48 All* MWG R 50 All* 25 2 MWG R 52 All* 2 2 MWG R 54 All* 2 28 MWG0.5-5 R 5 All* MWG R 58 All* MWG0.5-0 R 0 All* ,1.,1.9, 2.1, 2.4, 2., 2.9, 3.1mm. It is welcome to consult our factory for other bore sizes. 24

27 8mm x 10mm miniature Planetary gearhead Nominal Tolerance +/- 0.1mm unless otherwise specified Part no. Length without motor L2 Unit: mm GH810514V3 GH81024V3 GH81013V3 5.mm.mm 9.5mm Physical Motor Spec Gearhead Spec No Load Max. Output Torque Length with motor L1 Shaft Diameter Weight Operating range (Volt) Nominal Voltage Speed (approx.) No. of gear stages Gear Ratio Voltage Speed (approx.) Current(approx.) Maximum Torque (approx.) Gearhead Material 1.80mm 18.mm 20.mm 1.5mm 1.5mm 1.5mm 3.3g 3.4g 3.5g 2.5V~5V 2.5V~5V 2.5V~5V 3V 3V 3V RPM RPM RPM :5.14 1:2.45 1: V 3V 3V 3800 rpm 80 rpm 120rpm 0mA 80mA 90mA 15gcm 80gcm 250gcm Plastic 25

28 Reference material 1.1/ Basic geometry of Involute gear In general, we can imagine and understand the profile of involute teeth by using a cylinder. We can draw the involute curve by using a pencil which attached to the end of a taut string and unwinds from a cylinder. It is imagined that an end point of the string is pulled taut in one direction, then project its trace onto a plane that rotates with the base circle of cylinder. The mating of teeths can be understood by imagining two taut strings that unwind from cylinders separately. A moving intersection point formed along the tangent line of both base circles when the gear pair is rotating, as shown in figure 1a. This pair of involutes is conjugate because all points of contact having the common normal and tangent to their base circles. The tangent line of two base circle "line of contact" which passes through the line of centres establishes the pitch point P. This in turn sets the size of pitch diameters. 2

29 Reference material 1.2/ Gear formula of spur gear Basically, a mating gear pair must have the same module (m), which are measurements of tooth sizes (0.3m, 0.5m, 1m etc), as well as the same pressure angle. Outside diameter: d k = d 0 + 2m Pitch diameter: d 0 = Z x m Circular pitch: P c = x m where Z: No. of teeth m: Module in mm From the figure 1a, it is shown that the pitch diameters of mating gear are tangent to each others. Hence, we can determine the centre distance between any spur gears as shown in figure 1a. a = ( Z 1 + Z 2) m= d 01 + d

30 Reference material 1.3/ Gear train In order to find the revolution, speed and even the torque of the output gear, train value e is a most relevant data that we can find from the formula below: e = product of driving teeth numbers = N1 x N2 x N4 product of driven teeth numbers N2 x N3 x N5 nl = e x nf nl : speed of the last gear nf : speed of the first gear N : teeth numbers 28

31 Reference material 1.4/ Conversion of SI unit Quantity length Area Mass Force Pressure Torque Power inch unit inch inch square inch inch ² pound mass lb pound force lbf pounds per square inch lbf/ inch² inch pounds inch lbf lbf ft/ min Conventional metric unit meter m square centimeter cm² kilogram mass kg kilogram force kgf kilogram per square centimeter kgf/ cm² kilogram meters kgf m kgf m/ s SI unit metre m square metre m² kilogram mass kg newton N pascal N/ m² (Pa) newton meters N m N m/ s Conversion factor 1 inch = 25.4mm 1 mm = inch 1 m = ft 1 ft = m 1 inch² =.451 cm² 1 inch² = inch² 1 m² = 10.4 ft² 1 ft² = m² 1 lb = kg 1 kg = lb 1 lbf = kgf 1 lbf = N 1 kgf = lbf 1 kgf = N 1 N = kgf 1 N = lbf 1 Mpa = N/m² = N/mm² 1 kpa = 1000 N/m² 1 lbf/ inch² = kgf/ cm² 1 lbf/ inch² = ² kgf/ mm² 1 lbf/ inch ² = ³ N/ mm² 1 kgf/ cm² = lbf/ inch² 1 kgf/ cm² = ² N/ mm² 1 lbf inch = kgf cm 1 kgf cm = 0.89 lbf inch 1 lbf inch = N m 1 kgf m = N m 1 kgf cm = ² N m 1 N m = 8.85 lbf inch 1 N m = kgf cm 1 kw = 1000 N m/s 1 kw = 0, 000 N m/min 1 kw = 44, 220 lbf ft/min 1 kw = 1.34 hp 1 hp = 5 kgf m/s 1 hp = 44,41 N m/min 1 hp = 33,000 lbf ft/min 1 hp = 0.45 Kw 29