Hydraulic Nuts & Pumps

Hydraulic nuts and pumps are high-pressure mounting tools that apply controlled axial force to large bearings on tapered seats or sleeves. Pressurised oil moves an annular piston in the threaded nut, while compatible hand pumps, hoses and gauges provide the hydraulic supply for installation or removal work.

Key facts

Family: Industrial Components
Common types: Metric hydraulic nut, Inch hydraulic nut, Hand pump, Air-driven pump, Oil injector, High-pressure hose set
Materials: Forged alloy steel, Hardened steel, Polyurethane seals, NBR seals, Steel-braided hose, Brass fittings
Used in: Rolling mills, Paper machines, Mining crushers, Marine shafts, Large gearboxes

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Types

Metric hydraulic nut
Inch hydraulic nut
Hand pump
Air-driven pump
Oil injector
High-pressure hose set

Materials

Applications

Rolling mills
Paper machines
Mining crushers
Marine shafts
Large gearboxes

What to send for a quote

thread size
piston travel
bearing and sleeve arrangement
pump and hose requirement
gauge or indicator need

Questions about hydraulic nuts & pumps

What should I send to identify hydraulic nuts & pumps?

Send thread size, piston travel, bearing and sleeve arrangement, pump and hose requirement, gauge or indicator need. Confirm the exact shaft or sleeve thread form and pitch rather than selecting from nominal shaft diameter. A clear photograph, drawing or readable reference can resolve details that dimensions alone do not show.

How should I select hydraulic nuts & pumps?

Coordinate nut thread, piston area, travel, pump capability, hose, gauge and oil connection with the mounting procedure. Confirm the mating parts and operating environment before ordering, since an apparently similar size can use a different profile, material or internal arrangement.

Last updated: 2026-10-08