Career Press Suppliers
Career Press Suppliers

Spur Gearheads

Series 12/3

Key Features
Number of gear stages:
3 ... 15
Torque up to:
30 mNm
Intermittent torque up to:
100 mNm
Reduction ratio:
9.17 ... 154368
Diameter:
12 mm
Length:
15.4 ... 40.6 mm
Advantages
Available in a wide variety of reduction ratios
Zero backlash versions are available
Available with a variety of shaft bearings including sintered, ceramic, and ball bearings
Variants:
Series 12/3 9,17:1
n : Number of gear stages : 3 |MD : Torque up to : 6 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 9.17 |Ø : Diameter : 12 mm |L : Length : 15.4 mm
Series 12/3 20,6:1
n : Number of gear stages : 4 |MD : Torque up to : 8 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 20.6 |Ø : Diameter : 12 mm |L : Length : 17.5 mm
Series 12/3 46,4:1
n : Number of gear stages : 5 |MD : Torque up to : 10 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 46.4 |Ø : Diameter : 12 mm |L : Length : 19.6 mm
Series 12/3 104,4:1
n : Number of gear stages : 6 |MD : Torque up to : 20 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 104.4 |Ø : Diameter : 12 mm |L : Length : 21.7 mm
Series 12/3 235:1
n : Number of gear stages : 7 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 235 |Ø : Diameter : 12 mm |L : Length : 23.8 mm
Series 12/3 529:1
n : Number of gear stages : 8 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 529 |Ø : Diameter : 12 mm |L : Length : 25.9 mm
Series 12/3 1190:1
n : Number of gear stages : 9 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 1190 |Ø : Diameter : 12 mm |L : Length : 28 mm
Series 12/3 2677:1
n : Number of gear stages : 10 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 2677 |Ø : Diameter : 12 mm |L : Length : 30.1 mm
Series 12/3 6023:1
n : Number of gear stages : 11 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 6023 |Ø : Diameter : 12 mm |L : Length : 32.2 mm
Series 12/3 13552:1
n : Number of gear stages : 12 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 13552 |Ø : Diameter : 12 mm |L : Length : 34.3 mm
Series 12/3 30492:1
n : Number of gear stages : 13 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 30492 |Ø : Diameter : 12 mm |L : Length : 36.4 mm
Series 12/3 68608:1
n : Number of gear stages : 14 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 68608 |Ø : Diameter : 12 mm |L : Length : 38.5 mm
Series 12/3 154368:1
n : Number of gear stages : 15 |MD : Torque up to : 30 mNm |Mint. : Intermittent torque up to : 100 mNm |i : Reduction ratio : 154368 |Ø : Diameter : 12 mm |L : Length : 40.6 mm

Values at 22° and nominal voltageValue
Number of gear stages 3
Reduction ratio 9.17
Continuous torque, max. 6 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 90 %
Backlash, at no-load, typical 3 °
Length without motor L2 15.4 mm
Mass without motor, ca. 9 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 4
Reduction ratio 20.6
Continuous torque, max. 8 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 86 %
Backlash, at no-load, typical 3 °
Length without motor L2 17.5 mm
Mass without motor, ca. 10 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output =
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 5
Reduction ratio 46.4
Continuous torque, max. 10 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 81 %
Backlash, at no-load, typical 3 °
Length without motor L2 19.6 mm
Mass without motor, ca. 11 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 6
Reduction ratio 104.4
Continuous torque, max. 20 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 77 %
Backlash, at no-load, typical 3 °
Length without motor L2 21.7 mm
Mass without motor, ca. 12 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output =
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 7
Reduction ratio 235
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 74 %
Backlash, at no-load, typical 3 °
Length without motor L2 23.8 mm
Mass without motor, ca. 13 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 8
Reduction ratio 529
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 70 %
Backlash, at no-load, typical 3 °
Length without motor L2 25.9 mm
Mass without motor, ca. 14 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output =
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 9
Reduction ratio 1190
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 66 %
Backlash, at no-load, typical 3 °
Length without motor L2 28 mm
Mass without motor, ca. 15 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 10
Reduction ratio 2677
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 63 %
Backlash, at no-load, typical 3 °
Length without motor L2 30.1 mm
Mass without motor, ca. 16 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output =
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 11
Reduction ratio 6023
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 60 %
Backlash, at no-load, typical 3 °
Length without motor L2 32.2 mm
Mass without motor, ca. 17 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 12
Reduction ratio 13552
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 57 %
Backlash, at no-load, typical 3 °
Length without motor L2 34.3 mm
Mass without motor, ca. 18 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output =
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 13
Reduction ratio 30492
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 54 %
Backlash, at no-load, typical 3 °
Length without motor L2 36.4 mm
Mass without motor, ca. 19 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 14
Reduction ratio 68608
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 51 %
Backlash, at no-load, typical 3 °
Length without motor L2 38.5 mm
Mass without motor, ca. 20 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output =
Housing material metal
Geartrain material metal

Values at 22° and nominal voltageValue
Number of gear stages 15
Reduction ratio 154368
Continuous torque, max. 30 mNm
Intermittent torque, max. 100 mNm
Continuous input speed, max. 5000 min⁻¹
Efficiency, max. 49 %
Backlash, at no-load, typical 3 °
Length without motor L2 40.6 mm
Mass without motor, ca. 22 g
Operating temperature range -30 ... 100 °C
Direction of rotation, drive to output
Housing material metal
Geartrain material metal
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Absolute reduction
Your Choice
Selected Variant
Series 12/3 9,17:1
Key Features
Number of gear stages: 3
Torque up to: 6 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 9.17
Diameter: 12 mm
Length: 15.4 mm
Selected Variant
Series 12/3 20,6:1
Key Features
Number of gear stages: 4
Torque up to: 8 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 20.6
Diameter: 12 mm
Length: 17.5 mm
Selected Variant
Series 12/3 46,4:1
Key Features
Number of gear stages: 5
Torque up to: 10 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 46.4
Diameter: 12 mm
Length: 19.6 mm
Selected Variant
Series 12/3 104,4:1
Key Features
Number of gear stages: 6
Torque up to: 20 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 104.4
Diameter: 12 mm
Length: 21.7 mm
Selected Variant
Series 12/3 235:1
Key Features
Number of gear stages: 7
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 235
Diameter: 12 mm
Length: 23.8 mm
Selected Variant
Series 12/3 529:1
Key Features
Number of gear stages: 8
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 529
Diameter: 12 mm
Length: 25.9 mm
Selected Variant
Series 12/3 1190:1
Key Features
Number of gear stages: 9
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 1190
Diameter: 12 mm
Length: 28 mm
Selected Variant
Series 12/3 2677:1
Key Features
Number of gear stages: 10
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 2677
Diameter: 12 mm
Length: 30.1 mm
Selected Variant
Series 12/3 6023:1
Key Features
Number of gear stages: 11
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 6023
Diameter: 12 mm
Length: 32.2 mm
Selected Variant
Series 12/3 13552:1
Key Features
Number of gear stages: 12
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 13552
Diameter: 12 mm
Length: 34.3 mm
Selected Variant
Series 12/3 30492:1
Key Features
Number of gear stages: 13
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 30492
Diameter: 12 mm
Length: 36.4 mm
Selected Variant
Series 12/3 68608:1
Key Features
Number of gear stages: 14
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 68608
Diameter: 12 mm
Length: 38.5 mm
Selected Variant
Series 12/3 154368:1
Key Features
Number of gear stages: 15
Torque up to: 30 mNm
Intermittent torque up to: 100 mNm
Reduction ratio: 154368
Diameter: 12 mm
Length: 40.6 mm

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