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All Categories > Planetary Reducer Gearboxes > Servobox Series Model SB-A Planetary Reducer Gearboxes > Model Number SB-A120A-25N-P2  
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Model Number SB-A120A-25N-P2, Servobox Series Model SB-A120A 2-Stage, 25 Ratio, Solid Output Shaft Bearing, and P2 Backlash Class Planetary Reducer Gearbox


Low Backlash
Backlash for 1-stage model is under 7 arc·min. Also available specification with 1 arc·min of backlash. Backlash for 2-stage model is under 9 arc·min.

High Efficiency
Efficiency for 1-stage model exceeds 97%; 2-stage model exceeds 94%.

High Input Speed
Input speed allows for 5,000 RPM.




Specifications  · Dimensions  · Features

Specifications

Brands
Pelonis Technologies

Model
120A

Ratio
25

Output Bearing
Solid Output Shaft (No Keyway)

Backlash Class
P2

Stage
2-Stage

Rated Output Torque (Nominal Output Torque) (T2N)
333 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
≤ 9 arc·min

Torsional Rigidity
27 N·m/arc·min

Maximum Radial Force (F2rB)
6800 N

Maximum Axial Force (F2aB)
3400 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
≤ 63 dB

Weight
11 kg

Weight Tolerance (±)
3 %

Mass Moments of Inertia
2.63 kg·cm²


Dimensions

Dimension A1
130 mm

Dimension A2
9.0 mm

Dimension A3
32 mm

Dimension A4
110 mm

Dimension A5
10 mm
20 mm

Dimension A6
M10 x P1.5

Dimension A7
148 mm

Dimension A8
10 mm

Dimension A9
35 mm

Dimension B1
120 mm

Dimension B2
65 mm

Dimension B3
12 mm

Dimension B4
3 mm

Dimension B5
40 mm

Dimension B6
50 mm

Dimension B7
12 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 P1.5

Dimension C7
122 mm
130 mm
150 mm

Dimension C8
261 mm
271 mm


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

High Stability
Employs high tensile strength alloy steel. Gear hardening is made for the entire gear which extends gear service life and maintains high accuracy after a long period of operation.

High Speed Reduction Ratio
The gear reducer is a modular design. The planetary gear box can be connected. The speed reduction ratio can reach over 1/10000.


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