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Gearheads 2023

Product catalog summary

Overview

This document details the technical specifications, product range, and performance data for the V Series planetary and spur gearheads manufactured by Citizen Micro Co., Ltd. It emphasizes high torque output, simplified construction using sintered parts, and compatibility with various motor types including brushless motors. The RB-35V model is noted for its long life and suitability for continuous operation.

1. Product Range and Models

Planetary Gearheads: Models include IG-8, IG-10, IG-13V, IG-16, IG-16V, IG-22C, IG-22V, IG-43, RB-35V, RB-35C, RB-35P, RB-38, RTJ-100.
Spur Gearheads: Models include RA-12RB and RA-16R.

2. Specifications and Technical Data

General Features

Output shaft materials: Hardened stainless steel for planetary gearheads; hardened steel for spur gearheads.
Bearing type: Sleeve bearing standard, with optional ball bearing.
Radial play tolerance: ≤ 0.07 mm for both planetary and spur gearheads.
Axial play tolerance: Ranges from ≤ 0.15 mm to ≤ 0.35 mm depending on model.
Operating temperature range: -10°C to +60°C.

Planetary Gearhead Details

Available diameters: φ8, φ10, φ13, φ16.
Pinion specifications include module, number of teeth, pressure angle (typically 20°), and addendum modification coefficient.
Reduction ratios range from 1/4 up to 1/1413 depending on model and number of stages.
Efficiency varies between approximately 42% and 90%, influenced by reduction ratio and stage count.
Rated torque values are provided in mNm, kg·cm, and oz·in, varying by model and reduction ratio.

Spur Gearhead Details

Available sizes: φ12 and φ16.
Pinion specifications similar to planetary gearheads.
Reduction ratios range from 1/7 up to 1/1413.
Efficiency ranges from approximately 59% to 81%.
Rated torque values provided similarly to planetary gearheads.

3. Pinion Specifications

Each gearhead size includes detailed pinion parameters such as outside diameter, pitch circle diameter, module, number of teeth, pressure angle, addendum modification coefficient, and hole diameter with tolerances. These define gear tooth geometry and ensure compatibility with reduction ratios.

4. Combination and Compatibility

Gearheads are designed for integration with various motor types including coreless motors (SCR series), iron core motors (NCB, FMA series), brushless motors (HCA series), and encoders (magnetic and optical). Specific motor and encoder models with dimensions are referenced to ensure compatibility.

5. Ordering Information

Customers must specify the desired reduction ratio when ordering.
Both standard and custom-made gearheads are available.
Some gearheads (e.g., IG-16 planetary) are not sold separately and must be ordered as part of integrated units.

6. Technical Data and Tolerances

Radial play tolerance is generally ≤ 0.1 mm; axial play tolerance ranges up to 0.35 mm (up to 0.5 mm for some spur models).
Operating temperature range is consistently -10°C to +60°C across models.
Materials are hardened steel or stainless steel to ensure durability and long service life.

7. Summary of Key Parameters

Gearhead Type	Output Shaft Material	Radial Play (mm)	Axial Play (mm)	Operating Temp. (°C)	Typical Efficiency (%)
Planetary	Hardened Steel / Stainless Steel	≤ 0.1	≤ 0.35	-10 to +60	42 - 90
Spur (Long Life / Intermittent)	Hardened Stainless Steel	≤ 0.1	≤ 0.35 (up to 0.5)	-10 to +60	59 - 81

8. Performance Data for Specific Models

Spur Gearhead (φ42) with Coreless Brushless Motor

Output shaft: Hardened steel with sleeve bearing.
Radial play: ≤ 0.1 mm; axial play: ≤ 0.35 mm.
Reduction ratios: 1/11 to 1/270.
Rated torque: 294 to 981 mNm.
Efficiency: 41.7% to 69.5%.
Physical length: 59 to 73 mm; mass: 31.5 to 160 g.

Spur Gearhead with Worm Gear (36×66)

Output shaft: Hardened stainless steel with sleeve bearing.
Radial play: ≤ 0.1 mm; axial play: ≤ 0.5 mm.
Reduction ratios: 1/151 to 1/908.
Rated torque: 147 to 196 mNm.
Efficiency: 20.8% to 27.8%.
Length: 31 to 56 mm; mass: 16.0 to 36.5 g.

9. Critical Parameters and Best Practices

Always specify the correct reduction ratio to match torque and speed requirements.
Consider efficiency variations when selecting gearhead and reduction ratio combinations.
Verify compatibility among motor, gearhead, and encoder models for integrated systems.
Maintain operating temperature within -10°C to +60°C to ensure performance and longevity.
Note that some gearheads are not sold separately and must be ordered as integrated units with motors.

10. Additional Notes

All data are reference values and may vary slightly.
Product dimensions are provided in millimeters; mass in grams.
Contact Citizen Micro Co., Ltd. for technical support and ordering via telephone or email.

Conclusion

This document serves as a comprehensive technical reference for selecting and specifying planetary and spur gearheads combined with various motor types. It provides essential mechanical specifications, performance parameters, and ordering guidelines to ensure proper integration and optimal performance in precision applications.

Catalog excerpts

遊星ギヤヘッド V シリーズは、最適な設計による高トルク化と部品焼結化の実現によりシンプルな構造です。 V Series features higher torque thanks to optimum design and simple construction by use of sintered parts. スパーギヤヘッド世界標準の RB-35 シリーズを中心として、大きさ、トルクなど、用途に応じて幅広い商品郡から選定が可能です。RB-35V は、ロングライフ，連続運転に最適で、ブラシレスモータとの組合せが可能です。 Centered

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φ 8 遊星ギヤヘッド Planetary Gearhead Selection Guide モータ Motor ブラシレス Brushless 磁気 Magnetic 定格許容トルク Rated torque mNm 回転方向（モータに対して） Direction of rotation (Drive to output) エンコーダ Encoder ギヤヘッド Gearhead スパー Spur コアレス Coreless コアード Iron Core ブラシレス Brushless When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data Type Output shaft Bearing at output ラジアルガタスラストガタ使用温度範囲ギヤードモータ Gear Motor コアレス Coreless Technical Information Radial play Axial play Operating temperature range 遊星ステンレス（焼入れ）スリーブボール（オプション） ≦ 0.07 ≦ 0.15 − 10℃〜

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φ 10 遊星ギヤヘッド Planetary Gearhead ピッチ円直径 Pitch circle diameter 回転方向（モータに対して） Direction of rotation (Drive to output) ギヤヘッド Gearhead When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲 Type Output shaft Bearing at output Radial play Axial play Operating temperature range Planetary Stainless steel (Hardening) Sleeve 組合せ　Combination モータ Motor 型式 Model Number SCR10-17 ×× SCR10-25 ×× 種類 Type コアレス　　Coreless コアレス　　Coreless ギヤードモータ Gear Motor 長さ（mm）ページ Length Page 17.0+L 81 24.6+L 82 エンコーダ Encoder 型式ページ長さ（mm） Model Number Page Length...

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φ 12 スパーギヤヘッド Spur Gearhead 転位係数　Addendum modification cofficient Selection Guide モジュール Module Technical Information 技術情報コアレス Coreless ブラシレス Brushless 磁気 Magnetic ピッチ円直径 Pitch circle diameter 全減速比 All reduction ratios 全減速比 All reduction ratios Reduction ratio 定格許容トルク Rated torque mNm 回転方向（モータに対して） Direction of rotation (Drive to output) エンコーダ Encoder ギヤヘッド Gearhead スパー Spur コアレス Coreless コアード Iron Core ブラシレス Brushless When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲ギヤードモータ Gear Motor ピニオン仕様 Pinion Specification Type Output...

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φ 13 遊星ギヤヘッド Planetary Gearhead ピニオン仕様 Pinion Specification 転位係数　Addendum modification cofficient Reduction ratio 定格許容トルク Rated torque kg・cm 回転方向（モータに対して） Direction of rotation (Drive to output) When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲 Type Output shaft Bearing at output Radial play Axial play Operating temperature range Planetary Stainless steel (Hardening) Sleeve 組合せ　Combination モータ Motor 型式 Model Number SCR12-26 ×× SCR13-20 ×× SCR13-28 ×× 種類 Type コアレス　　Coreless コアレス　　Coreless コアレス　　Coreless ギヤードモータ Gear Motor 長さ（mm）...

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φ 16 スパーギヤヘッド Spur Gearhead 転位係数　Addendum modification cofficient モジュール Module Selection Guide ピッチ円直径 Pitch circle diameter Technical Information 技術情報コアレス Coreless ブラシレス Brushless 磁気 Magnetic エンコーダ Encoder 穴径 Hole diameter 対応減速比ギヤヘッド Gearhead スパー Spur コアレス Coreless コアード Iron Core ブラシレス Brushless Reduction ratio 仕様　Specifications 定格許容トルク Rated torque mNm 回転方向（モータに対して） Direction of rotation (Drive to output) When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲ギヤードモータ Gear Motor ピニオン仕様 Pinion Specification Type Output shaft Bearing...

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φ 16 遊星ギヤヘッド Planetary Gearhead 圧力角 Pressure angle 転位係数　Addendum modification cofficient 穴径 Hole diameter 対応減速比 Reduction ratio ※ギヤヘッド単体での販売は不可です。 The gearhead alone is not for sale. 定格許容トルク Rated torque kg・cm 回転方向（モータに対して） Direction of rotation (Drive to output) When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲 Type Output shaft Bearing at output Radial play Axial play Operating temperature range Planetary Steel (Hardening) Sleeve 組合せ　Combination モータ Motor 型式 Model Number SCR16-25 ×× SCR16-35 ×× SCR17-25 ×× SCR17-35 ×× WZC...

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φ 16 遊星ギヤヘッド Planetary Gearhead 転移係数　Addendum modification cofficient モジュール Module Selection Guide ピッチ円直径 Pitch circle diameter Technical Information 技術情報コアレス Coreless ブラシレス Brushless 磁気 Magnetic エンコーダ Encoder 穴径 Hole diameter 対応減速比 Reduction ratio ギヤヘッド Gearhead スパー Spur コアレス Coreless コアード Iron Core ブラシレス Brushless 仕様　Specifications 定格許容トルク Rated torque mNm 回転方向（モータに対して） Direction of rotation (Drive to output) When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲ギヤードモータ Gear Motor ピニオン仕様 Pinion Specification Type Output shaft...

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φ 22 遊星ギヤヘッド Planetary Gearhead ピニオン仕様 Pinion Specification 転位係数　Addendum modification cofficient 穴径 Hole diameter 対応減速比 Reduction ratio 定格許容トルク Rated torque kg・cm 回転方向（モータに対して） Direction of rotation (Drive to output) When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲 Type Output shaft Bearing at output Radial play Axial play Operating temperature range Planetary Steel (Hardening) Sleeve 組合せ　Combination モータ Motor 型式 Model Number SCR16-35 ×× SCR17-25 ×× SCR17-35 ×× 種類 Type コアレス　　Coreless コアレス　　Coreless コアレス　　Coreless ギヤードモータ...

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φ 22 遊星ギヤヘッド Planetary Gearhead 転位係数　Addendum modification cofficient モジュール Module Selection Guide ピッチ円直径 Pitch circle diameter Technical Information 技術情報コアレス Coreless ブラシレス Brushless 磁気 Magnetic エンコーダ Encoder Reduction ratio ギヤヘッド Gearhead スパー Spur コアレス Coreless コアード Iron Core ブラシレス Brushless 仕様　Specifications 定格許容トルク Rated torque mNm 回転方向（モータに対して） Direction of rotation (Drive to output) When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲ギヤードモータ Gear Motor ピニオン仕様 Pinion Specification Type Output shaft Bearing at output Radial...

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43 × 43 遊星ギヤヘッド Planetary Gearhead 圧力角 Pressure angle 転位係数　Addendum modification cofficient Unit：mm 穴径 Hole diameter 対応減速比 Reduction ratio 回転方向（モータに対して） Direction of rotation (Drive to output) When placing an order, please specify the reduction ratio. テクニカルデータ　Technical Data 種類出力軸出力軸ベアリングラジアルガタスラストガタ使用温度範囲 Type Output shaft Bearing at output Radial play Axial play Operating temperature range Planetary Carbon Steel Sleeve 組合せ　Combination モータ Motor 型式 Model Number 外径（mm） Diameter ギヤードモータ Gear Motor 長さ（mm）ページ Length Page エンコーダ Encoder ギヤヘッド Gearhead エンコーダ Encoder 型式ページ長さ（mm） Model Number...

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All Citizen Micro Co., Ltd. catalogs and technical brochures

MK-16
1 Page
SCR10-25
1 Page
SC21-37
1 Page
Dramatic Micro Technology
14 Pages
RB-35V
1 Page

Archived catalogs

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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