For 8.H120.3561.2048, EncoderWorks can provide a custom compatible replacement focused on power-type push-pull receiver matching, 2048 PPR scaling, Ø25 mm through-hollow-shaft fit, and 100 mm torque-arm installation. This model should not be treated like the 1024 PPR version or a smaller-bore encoder. The higher pulse count, heavy-duty shaft load, and long-distance push-pull behavior must match the original signal chain.
The 8.H120.3561.2048 is a heavy-duty optical incremental hollow-shaft encoder configuration with 2048 PPR, power-type push-pull output with inverted signals, 10–30 VDC supply, Ø25 mm through hollow shaft, 100 mm torque arm, and radial 1 m PVC cable connection. The controller must keep the same quadrature evaluation, reference-pulse logic, and 2048 PPR scaling.
The first failure boundary is signal-chain compatibility. A, B, 0 and inverted A/B/0 must be wired by function. If receiver threshold, shield grounding, cable routing, input filter, or inverted-channel mapping is wrong, the controller may see switching signals while still losing counts or reading the wrong direction.
This replacement fails when A/B/0 signals are present, but the controller loses counts or reads the wrong motion value because power-type push-pull output behavior, 2048 PPR scaling, cable shielding, inverted-channel mapping, or reference-pulse handling does not match the original encoder.
The second boundary is heavy-duty through-shaft mechanics. The Ø25 mm shaft, 100 mm torque arm, clamp-ring torque, shaft fit, radial load, axial load, IP67 sealing, and cable strain must be checked together. The torque arm should prevent housing rotation without forcing radial or angular preload into the bearing system.
The replacement decision should first confirm 2048 PPR scaling, 10–30 V power-type push-pull receiver compatibility, A/B/0 plus inverted channel mapping, 300 kHz frequency margin, radial 1 m cable 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.H120.3561.2048 as an industrial encoder custom compatible solution where power push-pull signal integrity and Ø25 hollow-shaft installation decide field reliability.
Typical production lead time: 15 working days.
Key Data
| Item | Data |
|---|---|
| Model | 8.H120.3561.2048 |
| Encoder type | Heavy-duty incremental hollow-shaft encoder |
| Detection type | Optical |
| Pulse count | 2048 PPR |
| Output circuit | Power-type 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 PVC cable |
| Cable length | 1 m |
| Protection class | IP67 |
| Main engineering anchor | Power push-pull and Ø25 hollow shaft |
| Main failure boundary | Wrong channel mapping, receiver mismatch, scaling error, torque-arm preload |
