When it comes to heavy-duty machinery and winch systems, the stability and durability of the encoder are critical. The M6-5S2HH51-W003 winch encoder is highly regarded for its precise feedback and robust construction. In real-world applications, users appreciate its strong anti-interference capability and long-term operational reliability, making it an essential component for safe and efficient equipment control.
Replacement Solution for M6-5S2HH51-W003
We provide a replacement solution for the M6-5S2HH51-W003 Avtron M6 incremental encoder. Manufactured using non-standard customization methods, our alternative encoder achieves a 1:1 match in both mechanical and electrical parameters, ensuring seamless installation without the need for modifications.


Key Benefits:
- Direct replacement for Avtron M6-5S2HH51-W003 encoder
- 1:1 compatibility with original specifications
- Rugged and durable for heavy-duty winch and industrial environments
- Solves challenges of long lead times and hard-to-source parts
- Real product photos available for verification
By choosing our replacement encoder, you can ensure stable performance and accurate signal feedback, while reducing downtime risks caused by procurement delays—helping your operations save both time and cost.
Introduction
Avtron M6C explosion protected ATEX and IECEx rated severe mill duty rotary encoders are designed for direct mounting on motor or load shafts, from 1" to 1 1/8" [25-30mm].
The M6C is an updated model which directly replaces the M6 encoder, and M6C adds IECEx certification. No barrier or isolator is required-mount M6C directly in any ATEX or IECEx Zone 1 application.
Why take a chance with weak optical encoders on your drilling rig? The M6C features Avtron Encoders' rugged magnetic sensor and solid metal rotor technology. Our shatterproof, moisture proof systems ensure your application has maximum uptime. The hollow shaft (tethered) models offer direct mounting on shafts from 1" to 1 1/8", without flanges, reducers, couplings, or other hardware. No rework is needed; just mount the encoder directly on the shaft, and secure the tether arm. The heavy duty bearings withstand runout and vibration that destroy lesser encoders.
M6C also includes a complete wiring protection system--it can survive all types of wiring errors and drive signals down the longest cables.
For more information on keeping your rotary encoders working in oil and gas applications, visit our oil and gas blog.
We believe explosion protected encoders should also be ready to withstand the rough drilling environment. Try the M6C today!
Parameters
Operating Power: Volts: 5-24 VDC; Current: 120mA, no load
Output Format: A, /A, B, /B; Optional Marker Z, /Z
Frequency Range: 0 to 250 kHz @ 6 V & 1 meter cable
PPR: 240-1200
Speed: 5000 RPM Max. Std.
Temperature: 80°C to -40°C (-40°C optional, -20°C standard)
Chemical: Polyurethane enamel paint protects against salt spray, mild acids, and bases
Enclosure Rating: IP66
Explosion Protection:
ATEX 0539 II 2 G Ex d e IIB T4 Gb
(Tamb = -40/-20°C to +80°C)
IECEx Ex d e IIB T4 Gb
(Tamb = -40/-20°C to +80°C)
Weight: 18 lbs. / 8kg.