Articles · Engineering Guides
Selection frameworks, not catalogs.
How to size, specify, and verify hydraulic drives — the physics that governs each decision and the checks that keep it reliable in service. Written by the engineers who build the hardware.
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What you’ll find here
Frameworks, not formulas.
Engineering reasoning you can apply.
These guides cover the decisions that actually determine whether a hydraulic drive performs — motor selection, back pressure, duty cycles, total cost of ownership, and system-level design. No catalog dumps, no marketing.
They’re written for engineers and procurement teams who need to reason about a system, not just look up a part number. Each guide follows the same structure:
- § 01The principleThe physics and the constraint that governs the decision.
- § 02The methodA step-by-step way to size and specify it correctly.
- § 03The field checkWhat to verify before you commit — and the failure modes to avoid.
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Case Studies
See the frameworks applied in the field.
Real OEM projects — what was specified, why, and how it performed once it went into service.
Read case studies →Product Selection
The right motor for your application.
Orbital motors, radial piston, steering units, gearboxes, and winches across the THOTH / ZiHYD range.
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Stuck on a
sizing decision?
Send us the application — load case, speed, envelope, interface — and we’ll walk through the selection with you. A technical assessment, not a product brochure.