Application & System Matching
| Feeds (release target) | Typical quantity per YZA15-8 | Notes |
|---|---|---|
| SB / SBD disc safety brake | 2 – 6 | Most common use; NC spring-applied disc brake |
| YLZ40 hydraulic drum brake | 3 – 5 | Central-hydraulic NC drum brake |
| ZYTJX-250 rail clamp | 2 – 4 | Heavy hydraulic rail clamp (parking / storm) |
| YJGQ-20 rail clamp | 6 – 10 | Compact rail clamp (lower oil per unit) |
| Single-acting cylinder | varies | Generic hydraulic actuator (push only) |
Typical systems
Overhead / gantry crane travel & hoist safety brakes
Port & shipyard gantry anti-slip (rail clamps + HPU)
Mine hoist & belt conveyor safety brakes
Metallurgy rolling & steel-mill brake banks
Hydro / dam gate hoist safety release
Why centralise?
One motor + pump instead of many per brake
PLC synchronises every brake release
Manual pump = safe maintenance release
Lower total installed cost vs individual thrusters
Pressure switch feeds safety interlock
YZA15-8 vs Alternatives
| Compared unit | Flow | Power | Role | Result |
|---|---|---|---|---|
| YZA15-8 | 8 Lpm | 3 kW | Mid HPU | Sweet spot for 2–6 NC brakes |
| YZA15-14 | 14 Lpm | 4 kW | Larger HPU | When YZA15-8 is too slow / too few cycles |
| YZB-14-20 | 20 Lpm | 5.5 kW | Heavy HPU | Large multi-leg / steel-mill systems |
| Split pump station | custom | large | Bulk oil house | Only for very large / centralised plants |
| Ed30/5 / YT1 thruster | - | - | Self-contained brake-mounted | Tiny, for one brake only - not centralised |
| DYTZ700-S/110 | - | - | Linear actuator (has a rod) | Wrong category - moves a load directly |
