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All Categories > Planetary Reducer Gearboxes > Servobox Series Model SN Planetary Reducer Gearboxes > Model Number SN120-50  
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Model Number SN120-50, Servobox Series Model SN120 2-Stage, 50 Ratio, and Standard Output Bearing Planetary Reducer Gearbox


Servobox Series Model SN Planetary Reducer Gearboxes




Specifications  · Dimensions  · Features

Specifications

Brands
Pelonis Technologies

Model
120

Ratio
50

Output Bearing
Standard (Keyway)

Stage
2-Stage

Rated Output Torque (Nominal Output Torque) (T2N)
220 N·m

Maximum Acceleration Torque (T2B)
1.8 Times of Rated Output Torque

Maximum Output Torque (Emergency Stop Torque) (T2NOT)
3 Times of Rated Output Torque

Rated Input Speed (n1N)
3000 rpm

Maximum Input Speed (n1B)
5000 rpm

Backlash
≤ 12 arc·min

Torsional Rigidity
19 N·m/arc·min

Maximum Radial Force (F2rB)
5340 N

Maximum Axial Force (F2aB)
2670 N

S5 Cycle Operation Service Life (LH)
>30000 hours

S1 Continuous Operation Service Life (LH)
>15000 hours

Efficiency (η)
≥ 94 %

Operating Temperature
-25 to +90 ºC

Lubrication
Synthetic Grease

Protection Class
Ingress Protection (IP65)

Mounting Position
Any

Noise Level
≤ 65 dB

Weight
9.84 kg

Weight Tolerance (±)
2 %

Mass Moments of Inertia
1.30 kg·cm²


Dimensions

Dimension A1
108 mm

Dimension A2
M8 x P1.25

Dimension A3
32 mm

Dimension A4
90 mm

Dimension A5
10 mm

Dimension A6
M12 x P1.75

Dimension A7
10 mm

Dimension A8
35 mm

Dimension B1
122 mm

Dimension B2
70 mm

Dimension B3
50 mm

Dimension B4
58 mm

Dimension B5
9 mm

Dimension B6
257 mm
267 mm

Dimension C1
115 mm
145 mm
165 mm

Dimension C2
M6
M8
M10

Dimension C3
24 mm
28 mm
32 mm

Dimension C4
67 mm
77 mm

Dimension C5
95 mm
110 mm
130 mm

Dimension C6
M8 x P1.25

Dimension C7
122 mm
130 mm
150 mm


Features
Helical Gear Design
The speed reduction mechanism employs helical gears and provides two times the meshing rate of teeth compared to regular spur gears. It also features extremely smooth operation, low noise, high torque output, and low backlash.

High Precision Gear Machining
Manufactured from high quality Ni-Cr-Mo alloy steel (SNCM220), precision machined and carbunzed to hardness 57-60 HRC. Precision teeth grinding ensures gear accuracy reaches DIN6 class.

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.

Integrated Planetary Arm Bracket
The planetary arm bracket and the output shaft are one-piece constructed to increase torsional rigidity and accuracy.

One-piece Gear Box and Advanced Surface Treatment
The gear box and the internal ring are one-piece constructed to achieve high rigidity and high torque.

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.


Cooling

Heating

Motors