For 8.H120.3554.1000, EncoderWorks can provide a custom compatible replacement focused on 10–30 V push-pull receiver matching, 1000 PPR scaling, Ø25 mm through-hollow-shaft fit, and radial M23 connector wiring. This model should not be treated like the 1024 PPR version or a cable-output encoder. The pulse count, connector pinout, torque-arm geometry, and A/B/0 inverted-channel mapping must match the original installation.
The 8.H120.3554.1000 is a heavy-duty optical incremental hollow-shaft encoder configuration with 1000 PPR, push-pull output with inverted signals, 10–30 VDC supply, Ø25 mm through hollow shaft, 100 mm torque arm, and radial M23 12-pin reverse connector. The controller must keep the same quadrature mode, reference-pulse logic, and 1000 PPR scaling.
The first failure boundary is connector signal mapping. A, B, 0 and inverted A/B/0 must be wired by function, not only by connector position. If M23 pin assignment, receiver threshold, shield bonding, inverted-channel polarity, or reference-pulse handling is wrong, the controller may see switching signals while still losing counts, reversing direction, or missing the zero pulse.
This replacement fails when A/B/0 signals are present, but the controller loses counts or reads the wrong motion value because push-pull output behavior, 1000 PPR scaling, M23 pin mapping, inverted-channel assignment, or reference-pulse handling does not match the original encoder.
The second boundary is heavy-duty through-shaft mechanics. The Ø25 mm bore, 100 mm torque arm, clamp-ring torque, shaft fit, radial load, axial load, IP67 sealing, and connector cable strain must be checked together. The torque arm should stop housing rotation without forcing radial or angular preload into the bearing system.
The replacement decision should first confirm 1000 PPR scaling, 10–30 V push-pull receiver compatibility, A/B/0 plus inverted channel mapping, 300 kHz frequency margin, radial M23 12-pin connector assignment, Ø25 mm through-hollow-shaft fit, 100 mm torque-arm geometry, clamp-ring tightening, IP67 sealing, shield grounding, cable routing, and shaft-load limits. EncoderWorks treats 8.H120.3554.1000 as an industrial encoder custom compatible solution where push-pull signal integrity and M23 wiring accuracy decide field reliability.
Typical production lead time: 15 working days.
Key Data
Item | Data |
|---|---|
| Model | 8.H120.3554.1000 |
| Encoder type | Heavy-duty incremental hollow-shaft encoder |
| Detection type | Optical |
| Pulse count | 1000 PPR |
| Output circuit | Push-pull with inverted signals |
| Signal output | A, B, 0 and inverted A, B, 0 |
| Supply voltage | 10–30 VDC |
| Max pulse frequency | 300 kHz |
| Shaft type | Through hollow shaft |
| Shaft size | Ø25 mm |
| Mounting | 100 mm torque arm |
| Connection | Radial M23 12-pin connector, reverse |
| Protection class | IP67 |
| Main engineering anchor | Push-pull output and M23 wiring |
| Main failure boundary | Wrong M23 pin mapping, receiver mismatch, scaling error, torque-arm preload |
