LHM family · Specification and integration review
LHM hydraulic motor series
The official entry identifies LHM and shows a catalogue motor photograph. It does not establish an exact variant or readable numerical performance table, so selection begins with a controlled unit specification.
LHM identifies the family, not an approved configuration
The official detail is titled “LHM series hydraulic motor” and labels the model LHM. Its introduction/specification headings do not supply an established readable numerical sheet. [1] The download index’s visible item is a WaterKD multifunction dredger, not an exact LHM datasheet. [3]
Replacement enquiry
Provide the existing nameplate, full designation, photographs and controlled installation/circuit records. Ask the supplier to identify its offered full code and each difference.
New drive enquiry
Provide the mechanism, required motion and duty. Request the proposed variant and its dimensional/performance documents before approving an arrangement.
No displacement, pressure, torque, speed, weight or internal construction is inferred from the image or the LHM prefix. No model from another manufacturer is treated as equivalent merely because its name looks similar.
Mark the interfaces that must remain unchanged
| Interface | Supply from the machine | Request from the motor supplier |
|---|---|---|
| Mounting | Flange/pilot/fastener arrangement and space | Controlled dimensions, tolerances and mounting instructions |
| Output | Shaft/coupling and actual driven loads | Exact shaft/end details and permitted load conditions |
| Hydraulics | Port connections, circuit and direction/control requirements | Port/seal drawing, circuit requirements and any drain arrangement |
| Installed envelope | Clearance, maintenance access and routing | Full outline including actual connections/attached items |
A matching flange alone does not establish a functional replacement. If the supplier proposes an adapter, gearbox or different circuit arrangement, record that changed scope separately and review the assembled mechanism.
A cutter drive and a winch are different selection tasks
Haiyu’s company scope includes dredging and engineering-vessel hydraulic systems, winches, stations, motors and transmissions. [2] This supplies application context, not proof that one LHM configuration performs every task.
- Driven mechanism
- Required torque/speed, load cases, operating cycle and starting/stopping behaviour.
- Available circuit
- Flow/pressure conditions, controls, fluid/temperature and actual return/drain arrangement.
- Proposed envelope
- Supplier’s exact-unit operating limits/curves, allowable loads and installation requirements.
- Included assembly
- Motor alone or gearing/control/holding arrangement; list supplied items and integration responsibility.
For a winch, establish the full mechanism and holding/stopping provisions under the actual applicable project requirements. A motor catalogue image is not a load-holding approval. For a cutter drive, define the actual mechanical duty rather than substituting a broad “marine” label.
Accept a unit-specific technical package
- Confirm identity and revision. Full code, actual maker, selected drawings, circuit and quotation scope.
- Agree the performance record. Test method, fluid/temperature, operating points, measured results and acceptance limits tied to the actual unit.
- Agree integration and handover. Final configuration, system trial responsibility, installation/maintenance instructions and parts records.
ISO 4409 concerns presentation and testing of steady-state component performance. [4] It does not supply missing LHM ratings, prove a test occurred, or approve a complete dredger/winch installation. The supplier’s displayed patents are separate equipment-related images, not numerical LHM motor data.
Can price comparison begin before the variant is identified?
A preliminary budget can be labelled as such, but compare an order quotation only after the configuration, interfaces, duty basis and supplied assembly are consistent. Otherwise a cheaper motor-only offer may be compared with a larger integrated package.
Request a selected LHM unit
Sources & review
- Official LHM entry ↗
Series/model label, photograph and introduction/specification headings; no readable exact-variant numerical sheet established.
2026-10-11 - Haiyu marine hydraulic scope ↗
Motors within dredging/vessel hydraulic systems; not a specific machine fit or LHM performance report.
2026-10-11 - Download index ↗
Visible WaterKD dredger entry rather than an LHM numerical sheet.
2026-10-11 - ISO 4409:2019 publisher abstract ↗
Basic steady-state component performance test presentation, not an LHM report or full-system approval.
2026-10-11
Specifications come from the manufacturer’s published information and the sources above; buying advice is written by CivilEquip with AI assistance. Ask the manufacturer to confirm the data for your configuration. Editorial policy · Report a correction.