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Quiet Operation
Helical gears reduce vibration and noise.

High Precision
Backlash ≤ 3 arc·min reaches precision alignment.

High Rigidity and Torque
High rigidity and high torque are achieved by integrant needle roller bearings and a one-piece construction.
Unit of Measure

Specifications

Brands

 N/A Pelonis Technologies

Model

 N/A 255

Ratio

 N/A 70

Output Bearing

 N/A Standard

Backlash Class

 N/A P0

Stage

 N/A 2-Stage

Rated Output Torque (Nominal Output Torque) (T2N)

 N/A 1870 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 2000 rpm

Maximum Input Speed (n1B)

 N/A 3000 rpm

Backlash

 N/A ≤ 7 arc·min

Torsional Rigidity

 N/A 1126 N·m/arc·min

Maximum Radial Force (Ball Bearing) (n2rB)

 N/A 39600 N

Maximum Axial Force (Ball Bearing) (n2aB)

 N/A 19800 N

Maximum Radial Force (Taper Bearing) (F2rB)

 N/A 107200 N

Maximum Axial Force (Taper Bearing) (F2aB)

 N/A 53600 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 ≥ 92 %

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 ≤ 78 dB

Weight

 N/A 97.5 kg

Weight Tolerance (±)

 N/A 3 %

Mass Moments of Inertia

 N/A 68.2 kg·cm²

Dimensions

Dimension A1

 N/A 280 mm

Number of Holes (A2)

 N/A 16

Dimension A2

 N/A 13.5 mm

Dimension A3

 N/A 180 mm

Dimension A4

 N/A 255 mm

Dimension A5

 N/A 12.5 mm14.5 mm

Dimension A6

 N/A 100 mm

Dimension A7

 N/A 300 mm

Dimension A8

 N/A 140 mm

Number of Holes (A9)

 N/A 12

Dimension A9

 N/A M16 x P2.0

Dimension A10

 N/A 12 mm

Dimension B1

 N/A 255 mm

Dimension B2

 N/A 66 mm

Dimension B3

 N/A 20 mm

Dimension B4

 N/A 12 mm

Dimension B5

 N/A 20 mm

Dimension B6

 N/A 32 mm

Dimension B7

 N/A 16 mm

Dimension B8

 N/A 10 mm

Dimension B9

 N/A 379.1 mm

Dimension B10

 N/A 445.1 mm

Dimension C1

 N/A 200 mm215 mm265 mm

Dimension C2

 N/A M10 M12 M16

Dimension C3

 N/A 38 mm42 mm48 mm55 mm

Dimension C4

 N/A 117 mm119 mm

Dimension C5

 N/A 114.3 mm180 mm230 mm

Dimension C6

 N/A M10 x P1.5

Dimension C7

 N/A 182 mm200 mm250 mm

Dimension C8

 N/A 235 mm237 mm

Dimension C9

 N/A 362.5 mm364.5 mm

Output Frame Dimensions

Output Frame Dimension A1

 N/A 100 mm

Output Frame Dimension A2

 N/A 140 mm

Output Frame Dimension A3

 N/A 180 mm

Output Frame Dimension A4

 N/A 255 mm

Output Frame Dimension A5

 N/A 280 mm

Output Frame Dimension B6

 N/A M16 x P2

Output Frame Dimension B8

 N/A 12 mm

Output Frame Dimension B9

 N/A 13.5 mm

Features

Features

 N/A One-Piece Gearbox Housing
The gearbox and internal ring gear are a one-piece construction. High gear accuracy meets DIN6 class.

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

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

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.