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Overview
The RollerDrive RW Series is a positioner for welding machines.
It holds up against shocks that are caused by high-speed positioning and emergency stopping of heavy loads.
The oversized hollow output shaft simplifies wiring and plumbing to the equipment to be mounted on the output shaft.
The low-profile body allows for compact equipment design.
RW Series(3 models)
| RW170 | RW240 | RW320 |
Large diameter hollow hole
Thin body
Features
Super high-speed positioning (180° indexing time) : 1.5 sec/2000 kg [RW320]
Oversized hollow shaft 360 mm [RW320]
Tough against impact from emergency stops
Mounts in any position
Application(Push / Pull line)
Vertical swivel arm
Large welding positioner
Hollow shaft specification rotary table
Specifications
Sizes RW170 RW240 RW320
Allowable loading capacity kg 2000 5000 9000
Allowable moment load output shaft N・m 5500 8800 10700
Output shaft runout
(axial/radial)
μm or less 10 10 10
Angular repeatability accuracy mm ±0.05(R=1000mm) ±0.05(R=1000mm) ±0.05(R=1000mm)
Rotating Angle deg 0~360 0~360 0~360
Gear ratio   72 216 120 360 120 360
Maximum Speed min-1 35
(210°/sec)
13.8
(83.3°/sec)
25
(150°/sec)
8.3
(50°/sec)
25
(150°/sec)
8.3
(50°/sec)
Internal moment of
inertia on motor shaft
kg・m2 0.00388 0.00173 0.00614 0.00198 0.0118 0.00261
Weight (Motor not included) kg 120 128.1 400 408.1 650 658(667)*
* Weight for RW320 (high gear ratio) Yaskawa Motor.
Type of servomotor

Model Manufacture Model No. Capacity(kw)
RW170 Yaskawa Electric(Σ-Ⅴ) SGMGV-30A3A2E 2.9
RW240 SGMGV-44A3A2E 4.4
RW320 SGMGV-75A3A2E 7.5
RW170 Yaskawa Electric (Σ-7) SGM7G-30A7A2E 2.9
RW240 SGM7G-44A7A2E 4.4
RW320 SGM7G-75A7A2E 7.5
RW170 Mitsubishi Electric (J4) HF-SP352BJ 3.5
RW240 HF-SP502BJ 5.0
RW320 HF-SP702BJ 7.0
RW170 FANUC αiF12/4000-B(A06B-2243-B400) 3.0
RW240 αiF22/4000-B(A06B-2248-B400) 4.0
RW320 αiF30/4000-B(A06B-2253-B400) 7.0
RW170 Mitsubishi Electric (J5) HK-ST352WBJ 3.5
RW240 HK-ST502WBJ 5.0
RW320 HK-ST702WBJ 7.0
Same for all sizes Motor not listed above
* The motor listed above comes with a brake.
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