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Integrated Planetary Arm Bracket
The planetary arm bracket and the output shaft are one-piece constructed to increase torsional rigidity and accuracy. The entire structure is machined for controlling accuracy in the specified tolerance.

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.
Servobox Series Model FB 1-Stage Planetary Reducer Gearbox
Unit of Measure
Items Servobox Series Model FB 1-Stage Planetary Reducer Gearbox
FB50-3
Servobox Series Model FB50 1-Stage, 3 Ratio, and Standard Output Bearing Planetary Reducer Gearbox
Servobox Series Model FB 1-Stage Planetary Reducer Gearbox
FB50-3N
Servobox Series Model FB50 1-Stage, 3 Ratio, and Solid Output Shaft Output Bearing Planetary Reducer Gearbox
Servobox Series Model FB 1-Stage Planetary Reducer Gearbox
FB50-4
Servobox Series Model FB50 1-Stage, 4 Ratio, and Standard Output Bearing Planetary Reducer Gearbox
Servobox Series Model FB 1-Stage Planetary Reducer Gearbox
FB50-4N
Servobox Series Model FB50 1-Stage, 4 Ratio, and Solid Output Shaft Output Bearing Planetary Reducer Gearbox
Servobox Series Model FB 1-Stage Planetary Reducer Gearbox
FB50-5
Servobox Series Model FB50 1-Stage, 5 Ratio, and Standard Output Bearing Planetary Reducer Gearbox
Description N/A Integrated Planetary Arm Bracket
The planetary arm bracket and the output shaft are one-piece constructed to increase torsional rigidity and accuracy. The entire structure is machined for controlling accuracy in the specified tolerance.

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.
Brands N/A Pelonis Technologies
Model N/A 50
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 50 mm
Dimension B2 N/A 4 mm
Dimension B3 N/A 15 mm
Dimension B4 N/A 20 mm
Dimension B5 N/A 25 mm
Dimension B6 N/A 6 mm
Dimension B7 N/A 100.5 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 mm
Dimension C5 N/A 30 mm40 mm50 mm
Dimension C6 N/A M4 x P0.7
Dimension C7 N/A 46 mm55 mm
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 5000 rpm
Backlash N/A ≤ 8 arc·min
Torsional Rigidity N/A 2.3 N·m/arc·min
Maximum Radial Force (F2rB) N/A 750 N
Maximum Axial Force (F2aB) N/A 325 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 ≤ 62 dB
Weight N/A 0.63 kg
Weight Tolerance (±) N/A 3 %
Mass Moments of Inertia N/A 0.04 kg·cm²
Features N/A High Precision Gear Machining
The planetary gear and sun gear are manufactured from high quality Ni-Cr-Mo alloy steel (SNCM220), precision machined and carburizing heat treatment to hardness 57-60 HRC. Precision teeth grinding or skiving ensures gear accuracy reaches DIN6 class.

One-piece Gear Box Housing
The gear box and internal ring gear are one-piece constructed. High gear accuracy meets DIN6 class.