$ 349.37
Reliable SICK MRA-G055-101D4 wire draw mechanism delivering precise 1.25 m linear measurement for encoder systems. Compact, durable, and ideal for automation.
The SICK MRA-G055-101D4 wire draw mechanism is a compact measuring unit designed to convert linear motion into precise rotational feedback for compatible encoders. Built with a 6 mm servo-flange interface, it provides dependable displacement measurement across a 0 to 1.25 m range . Its lightweight Noryl housing, flexible stainless-steel wire, and stable spring return design enable smooth operation in confined industrial spaces. Crafted for accuracy and repeatability, it is a practical choice for automation systems that require reliable position tracking without complex installation.
The MRA-G055-101D4 is engineered to deliver consistent linear measurement performance, even in demanding setups. With its high reproducibility and tight linearity tolerance, it supports machinery where precise motion feedback is essential . The stainless-steel measuring wire, protected with a PA12 sheath, is designed to endure repeated cycling, while its smooth payout helps maintain stable encoder readings. Operating speeds of up to 6 m/s and a broad temperature range make it suitable for varied industrial environments. Its durability, long service life, and ease of integration help reduce maintenance needs while ensuring dependable measurement over time.
Why MRA-G055-101D4?
The MRA-G055-101D4 is chosen for its blend of precision, compact design, and long-cycle durability. It transforms linear motion into highly reliable encoder feedback without requiring large installation space. With smooth wire travel, strong stainless-steel construction, and stable repeatability, it delivers dependable measurement even in fast-moving or confined automation setups.
This mechanism solves the challenge of obtaining accurate linear displacement feedback in machines where direct encoder mounting is difficult or impossible. It offers a simple, robust way to track movement over distance, maintaining consistent measurement in environments with limited space, variable motion paths, or continuous cycling demands.
| Feature | Details | Benefit |
|---|---|---|
| Measuring Range | 0 to 1.25 m | Covers short-to-medium displacement tasks with reliable linear tracking. |
| Reproducibility | ≤ 0.2 mm | Ensures consistent and repeatable position feedback for automation accuracy. |
| Linearity | ≤ ±2 mm | Provides controlled measurement deviations for stable system performance. |
| Hysteresis | ≤ 0.4 mm | Maintains smooth wire movement for uninterrupted feedback quality. |
| Wire Material | Stainless steel 1.4401, PA12-sheathed | Robust and flexible wire designed for long-term cyclical use. |
| Wire Diameter | 0.45 mm | Thin yet durable profile supports quick, smooth extension and retraction. |
| Wire Acceleration | Up to 10 m/s² | Handles rapid movements without compromising precision. |
| Operating Speed | Up to 6 m/s | Suitable for fast-moving mechanisms and high-speed automation. |
| Wire Length per Revolution | 150 mm | Simplifies encoder pairing and resolution calculation. |
| Actual Wire Length | 1.45 m | Supports full extension while allowing safe internal spring travel. |
| Spring Return Force | 1 to 1.4 N (at 25 °C) | Ensures steady wire retraction for continuous cycles. |
| Housing Material | Noryl (plastic) | Lightweight, corrosion-resistant enclosure suited for demanding environments. |
| Operating Temperature | –30 °C to +70 °C | Reliable performance in cold-room, outdoor, or heated applications. |
| Enclosure Rating | IP50 | Protection from dust ingress, ideal for sheltered industrial setups. |
| Cycle Life | ~1,000,000 cycles (typical) | Long service life for repetitive motion systems. |
| Weight (Wire) | 0.58 g/m | Low mass improves wire responsiveness. |
| Mounting | Servo flange, 6 mm shaft interface | Easy integration with a wide range of encoders. |
| Included Accessories | Fixing clamps, screws, Woodruff key | Ready for immediate installation and setup. |
| Certifications | China RoHS compliant | Meets international environmental standards. |
Download SICK MRA-G055-101D4 (5324019) Datasheet
| Commercial Data | Details |
|---|---|
| Product Weight | 150 g (mechanism only) |
| Country of Origin | Germany |
In compact assembly machines where motion paths are short but demand extremely accurate positioning, maintaining consistent measurement is often a challenge. The MRA-G055-101D4 fits well into these systems because its lightweight housing and flexible wire allow it to measure movement in spaces too tight for larger sensors. Many machines suffer from gradual drift or noisy feedback as components cycle rapidly. This mechanism’s stable repeatability helps ensure each movement—whether aligning miniature parts, guiding feeders, or positioning small tools—stays within required tolerances. Its smooth wire travel supports continuous operation, making it a reliable solution for high-density automated stations that handle repetitive micro-assembly processes.
Small robotic arms, especially collaborative types, often need compact measurement devices to monitor linear extension or subtle end-effector adjustments. The MRA-G055-101D4 offers an elegant way to capture accurate motion without adding weight or occupying valuable space. Traditional encoders can be bulky or difficult to mount on slim robotic joints, but this wire-based mechanism provides an alternative that adapts easily to constrained geometries. Its durability under rapid repeated movements supports consistent path control and helps robots maintain stable gripping, placing, or sliding routines. This leads to smoother operation in tasks like sorting, packaging, and delicate part manipulation, where predictable movement is essential.
Laboratory automation systems, such as sample handlers and linear micro-stages, require precise motion feedback to ensure consistent handling of delicate materials. Installing a full-size encoder is often impractical due to narrow frames or internal shielding. The MRA-G055-101D4 overcomes this by delivering accurate measurement through a slender wire that navigates tight internal corridors. It responds reliably to both slow and rapid motions, maintaining positional integrity across long processing cycles. Its low hysteresis supports smooth and predictable travel, which is essential for repeatable dosing, slide positioning, and controlled reagent application. This contributes to higher reliability and reduced variability in automated lab workflows.
Many compact lifting modules, vertical slides, and mini-elevator systems operate in restricted mechanical spaces where conventional linear sensors cannot be easily mounted. The MRA-G055-101D4 offers a practical way to keep track of vertical movement through its stable wire extension mechanism. Its spring return maintains steady tension, ensuring the encoder receives clear displacement readings throughout each cycle. This helps equipment achieve smoother travel, better repeatability, and easier diagnostics for maintenance. From compact packaging lifts to small storage towers and lightweight industrial hoists, the mechanism provides reliable displacement monitoring without imposing bulky mechanical additions.
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