Plaromaster Elastohydrodynamic Variable Speed Drives
Planetroll’s patented design for these Plaromaster mechanical variable-speed drive gearboxes offers several significant advantages over traditional friction drives and frequency inverters. These advantages are found in applications requiring high torque at startup, explosion-proof operation, infinite variable speed to zero RPM, and reliable overload protection.
- 7 sizes from fractional to 10 HP capacity
- Torque ranges from 0.8 to 110 Nm (up to 14,000 Nm with integral speed reducer)
Control System Options:
- Variable Speed Adjustment: Standard hand wheel or gauged handwheel for precise repeatable adjustment. The electric remote control is also available for these Planetroll mechanical variable-speed gearboxes
- Plarotronic Electronic Speed Control: Provides automated speed monitoring and control. The programmable controller can vary or maintain speed and display parameters
- Plarotorque Electronic Torque Meter: Monitors, calculates, and displays actual torque for process control. Provides precise information on efficiency, power demand, temperature, and torque utilization of these mechanical variable speed drives
- Overload protection assured
- Infinite variability from 41% motor speed to zero RPM
- NEMA and IEC motor mounts
- Handwheel or motor control
- Speed, temperature, and torque monitoring optional
- Integrated gearboxes for high torque applications
- Remote control capability
- Optional axial load-bearing boxes
Benefits of these Mechanical Variable-Speed Drives over Friction Drives:
- No possibility of slip through
- Wider speed range to zero RPM
- No downtime due to overload damage
- Longer life
- Explosion-proof
Benefits of these Mechanical Variable-Speed Drives over Frequency Inverters:
- Maximum output torque available at zero to full speed
- Higher power density
- Less costly explosion-proof solution
What’s Next?
The functional principle of the Planetroll Variable Speed Gearbox
Product Line Overview: Series RT
|
Model(1)
|
28
|
40
|
50
|
60
|
70
|
85
|
110
|
|
Ratio(2)
|
Torque capacity in inlbs(3)
|
||||||
|
5
|
---
|
398
|
717
|
1106
|
1558
|
2469
|
---
|
|
7
|
159
|
398
|
664
|
1000
|
1469
|
2292
|
4646
|
|
10
|
159
|
407
|
664
|
1177
|
1593
|
2372
|
4708
|
|
15
|
159
|
389
|
655
|
1151
|
1664
|
2558
|
4956
|
|
20
|
142
|
345
|
575
|
1080
|
1717
|
2850
|
5726
|
|
28
|
177
|
425
|
752
|
1230
|
1912
|
2823
|
5682
|
|
40
|
150
|
372
|
637
|
1195
|
2106
|
2876
|
6115
|
|
49
|
150
|
363
|
673
|
1133
|
1673
|
2797
|
5584
|
|
56
|
133
|
336
|
628
|
1089
|
1593
|
2699
|
5266
|
|
70
|
106
|
319
|
558
|
1080
|
1443
|
2567
|
5620
|
|
80
|
106
|
283
|
513
|
938
|
1363
|
2478
|
4646
|
|
100
|
71
|
257
|
381
|
735
|
1151
|
1859
|
4151
|
(1) Larger sizes available in alternate design.
(2) Higher ratios available in two stage worm and helical worm designs.
(3) Based on 1750 RPM input speed.
Why Choose a Plaromaster Variable Speed Drive?
Plaromaster provides the world’s leading variable-speed gearboxes in the explosion-proof area according to ATEX 95.