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Quiet Operation
Helical gears reduce vibration and noise.

High Torque
High output torque is compared to spur gear planetary gear reducers.

High Efficiency
Efficiency for 1-stage model exceeds 97%; 2-stage model exceeds 94%.
Servobox Series Model PB 1-Stage Planetary Reducer Gearbox
Servobox Series Model PB 1-Stage Planetary Reducer Gearbox - 2
Unit of Measure
Items Servobox Series Model PB 1-Stage Planetary Reducer Gearbox
PB44-3
Servobox Series Model PB44 1-Stage, 3 Ratio, and Standard Output Bearing Planetary Reducer Gearbox
Servobox Series Model PB 1-Stage Planetary Reducer Gearbox
PB44-3N
Servobox Series Model PB44 1-Stage, 3 Ratio, and Solid Output Shaft Bearing Planetary Reducer Gearbox
Servobox Series Model PB 1-Stage Planetary Reducer Gearbox
PB44-4
Servobox Series Model PB44 1-Stage, 4 Ratio, and Standard Output Bearing Planetary Reducer Gearbox
Servobox Series Model PB 1-Stage Planetary Reducer Gearbox
PB44-4N
Servobox Series Model PB44 1-Stage, 4 Ratio, and Solid Output Shaft Bearing Planetary Reducer Gearbox
Servobox Series Model PB 1-Stage Planetary Reducer Gearbox
PB44-5
Servobox Series Model PB44 1-Stage, 5 Ratio, and Standard Output Bearing Planetary Reducer Gearbox
Description N/A Quiet Operation
Helical gears reduce vibration and noise.

High Torque
High output torque is compared to spur gear planetary gear reducers.

High Efficiency
Efficiency for 1-stage model exceeds 97%; 2-stage model exceeds 94%.
Brands N/A Pelonis Technologies
Model N/A 44
Ratio N/A 3 N/A 3 N/A 4 N/A 4 N/A 5
Output Bearing N/A Standard (Keyway) N/A Solid Output Shaft (No Keyway) N/A Standard (Keyway) N/A Solid Output Shaft (No Keyway) N/A Standard (Keyway)
Stage N/A 1-Stage
Dimension A1 N/A 50 mm
Dimension A2 N/A 4.5 mm
Dimension A3 N/A 13 mm
Dimension A4 N/A 35 mm
Dimension A5 N/A 5 mm
Dimension A6 N/A M4 x P0.7
Dimension A7 N/A 5 mm
Dimension A8 N/A 15 mm
Dimension B1 N/A 44 mm
Dimension B2 N/A 26 mm
Dimension B3 N/A 5 mm
Dimension B4 N/A 15 mm
Dimension B5 N/A 20 mm
Dimension B6 N/A 5 mm
Dimension B7 N/A 95 mm
Dimension C1 N/A 46 mm60 mm63 mm
Dimension C2 N/A M3 M4 M5
Dimension C3 N/A 8 mm9 mm11 mm
Dimension C4 N/A 26 mm30.5 mm
Dimension C5 N/A 30 mm40 mm50 mm
Dimension C6 N/A M4 x P0.7
Dimension C7 N/A 46 mm55 mm
Dimension C8 N/A
Rated Output Torque (Nominal Output Torque) (T2N) N/A 17 N·m N/A 17 N·m N/A 15 N·m N/A 15 N·m N/A 14 N·m
Maximum Acceleration Torque (T2B) N/A 1.8 Times of Rated Output Torque
Maximum Output Torque (Emergency Stop Torque) (T2NOT) N/A 3 Times of Rated Output Torque
Rated Input Speed (n1N) N/A 3000 rpm
Maximum Input Speed (n1B) N/A 6000 rpm
Backlash N/A ≤ 8 arc·min
Torsional Rigidity N/A 3 N·m/arc·min
Maximum Radial Force (F2rB) N/A 360 N
Maximum Axial Force (F2aB) N/A 180 N
S5 Cycle Operation Service Life (LH) N/A >30000 hours
S1 Continuous Operation Service Life (LH) N/A >15000 hours
Efficiency (η) N/A ≥ 97 %
Operating Temperature N/A -25 to +90 ºC
Lubrication N/A Synthetic Grease
Protection Class N/A Ingress Protection (IP65)
Mounting Position N/A Any
Noise Level N/A ≤ 56 dB
Weight N/A 0.58 kg
Weight Tolerance (±) N/A 3 %
Mass Moments of Inertia N/A 0.03 kg·cm²
Features N/A Integrated Planetary Arm Bracket
The planetary arm bracket and the output shaft are one-piece constructed to increase torsional rigidity and accuracy.

Full Needle Roller Bearings Design
The planetary gear transmission employs full needle roller bearings without a retainer to increase the contact surface. This greatly improves structural rigidity and service life.

Collet Locking Mechanism
The input-end and the motor are coupled through a collet locking mechanism. The mechanism is dynamically balanced to ensure concentricity and balance on the connection and has no backlash for power transmission while running at a high speed.

One-Piece Helical Gear Box
The gear box and internal ring are a one-piece construction design. The speed reduction mechanism employs helical gears that provide two times the meshing rate of teeth compared to regular spur gears. It operates very smoothly, has low noise, high output torque, and low backlash