RLA Series
Maximum Thrust for the Heaviest Web Handling Applications.
Key Features
Technical capabilities designed for precision and reliability.
- Reverse parallel belt-and-pulley design – belt, pulley, and rotary motor driving a ball or roller screw delivers the highest thrust in the Roll-2-Roll actuator lineup: 500–2,000 lbf (nominal)
- Load capacity by bearing type – the RLA-200 moves about 20,000 lb on rolling bearings at μ 0.1; see the load table for each model
- Stroke lengths from 4 to 12 inches – available in 4, 6, 8, and 12 in configurations to match specific guide frame geometry and web width requirements
- Front and rear mounting options – spherical bearing and clevis mounting at both ends accommodates misalignment under heavy loads
- Powered by MC QD 1180 or SCU6x MxD – 5.5–7 A motor current at 24/48 VDC (48 VDC preferred for maximum performance)
- Off-shelf replacement – standard pivot, rod eye, and clevis mounting options fit existing terminal guide frame designs
Key Benefits
Measurable business value and operational improvements.
- Stop settling for underpowered actuators – the RLA Series delivers 500–2,000 lbf of thrust (nominal), enough to position the heaviest webs with precision
- Handle every heavy application with one actuator family – from 4-inch strokes on compact rewind stands to 12-inch strokes on wide-web shifting systems, no mixing actuator brands
- Eliminate drift under maximum load – ball and roller screw drives maintain repeatable positioning even at full capacity; no creep, no gradual misalignment
- Built for the toughest environments – IP54 protection, heavy-duty bearings, and robust construction perform in paper mills, steel processing, and heavy converting operations
Specifications
Detailed technical specifications and performance data.
| Specification | RLA-050 | RLA-100 | RLA-150 | RLA-200 |
|---|---|---|---|---|
| Thrust (Nominal) | 500 lbf | 1,000 lbf | 1,500 lbf | 2,000 lbf |
| Rated Maximum Thrust | 4,500 N (1,012 lbf) | 8,600 N (1,933 lbf) | 8,800 N (1,978 lbf) | 10,200 N (2,293 lbf) |
| Stroke Length Options | 4 in / 6 in / 8 in / 12 in (100–300 mm) | |||
| Maximum Speed | 15 mm/sec (0.59 in/sec) | |||
| Drive Voltage | 24/48 VDC (48 VDC preferred) | |||
| Motor Current | 5.5–7 A | |||
| Power Source | MC QD 1180 or SCU6x MxD | |||
| Motor Type | Brushless Bi-polar Stepper, 1.8° resolution | |||
| Actuator Type | Belt + Ball/Roller Screw | |||
| Mounting Options | Pivot / Rod Eye / Clevis | |||
| Terminal Web Guide | Yes | |||
| Intermediate Web Guide | Yes | |||
| Off-Shelf Replacement | Yes | |||
Load capacity by bearing type
| Model | Nominal thrust | μ 0.06 rolling bearings (standard) | μ 0.1 rolling bearings, with margin | μ 0.25 sliding bearings |
|---|---|---|---|---|
| RLA-050 | 500 lbf | 8,333 lb (3,779 kg) | 5,000 lb (2,267 kg) | 2,000 lb (907 kg) |
| RLA-100 | 1,000 lbf | 16,666 lb (7,559 kg) | 10,000 lb (4,535 kg) | 4,000 lb (1,814 kg) |
| RLA-150 | 1,500 lbf | 25,000 lb (11,339 kg) | 15,000 lb (6,803 kg) | 6,000 lb (2,721 kg) |
| RLA-200 | 2,000 lbf | 33,333 lb (15,119 kg) | 20,000 lb (9,071 kg) | 8,000 lb (3,628 kg) |
Load = nominal thrust ÷ friction coefficient μ. Horizontal travel at constant speed, no web tension; acceleration and breakaway not included. μ 0.06 and 0.1 are conservative design coefficients for rolling bearings (0.1 adds margin for performance and service life); 0.25 is for sliding bearings. Size a real application with the actuator sizing calculator.
Sizing Calculator
Calculate the right actuator for your application.
Actuator Sizing Calculator
Calculate the thrust required for your unwind/rewind application
Documentation & Downloads
CAD files, datasheets, manuals, and technical documentation.
Quick Start Guides
Step-by-step setup guides for this product.
Product Videos
Watch demonstrations, tutorials, and application examples.
Understanding Actuators in Web Guiding Systems | Web Guiding Fundamentals
How to Set the Actuator Parameters in SCU5 Controller
Setting the Parameters of SCU5 for Servo Center Operation using a Physical or Electronic Position.
