Accessories for hydraulic pumps

Bearing supports are protective elements mounted on the drive shaft of gear pumps or other hydraulic pumps. They protect the pump from external shear forces as well as axial and radial loads generated by drives such as V-belts, chains, or pulleys. By relieving the internal pump bearings, bearing supports increase the pump’s service life and reduce the risk of bearing failures.

Bearing supports are used in hydraulic systems of industrial equipment, commercial vehicles, as well as agricultural and forestry machinery. They are particularly useful when pumps are belt- or chain-driven and therefore exposed to lateral forces.

• Protection of the pump’s main bearings
• Extended service life and higher reliability
• Reduced maintenance effort
• Enable more flexible drive types and simplify machine design

Bearing supports are usually made of high-grade steels or special alloys for the bearing components. Plastic or rubber elements are used for damping and sealing. Housings are typically manufactured from cast steel or aluminum, while gears and shafts are made of hardened steel.

Variants are available in different frame sizes (e.g. BG2, BG3) and shaft diameters (cylindrical 18h7, Ø24 mm, or tapered 1:8). Flange designs such as rectangular, 3-bolt, or 4-bolt flanges are also available.

Angle flanges are connection elements that allow hydraulic or oil supply lines to be attached to pumps, motors, or valves in a space-saving way and at a defined angle (usually 90°). They optimize line routing in confined spaces and ensure a secure, leak-proof connection.

Angle flanges are often made of galvanized or coated steel, and for lighter applications also of aluminum. Seals are manufactured from rubber or O-rings (NBR, Viton).

They are available in different bolt circle diameters (30, 40, 51, 62 mm) and thread sizes (e.g. G1/2", G3/4", G1"). They are typically mounted using 3-bolt flanges with screws and spring washers.

Bearing supports are installed using keys and cylindrical fittings, where precise alignment is important. They require little maintenance but should be regularly checked for play, noise, and lubrication.

• Bearing support: correct shaft and flange dimensions, load capacity, type of drive (belt, chain), operating conditions (temperature, dust, humidity)

For group 2 (BG2), bearing supports are available with a tapered shaft 1:8 or cylindrical shaft 18h7, typically with centering diameters of 36.5 mm or 72 mm. Group 3 (BG3) offers variants with tapered shaft 1:8 or cylindrical shaft Ø24 mm with keyway, usually with 50.75 mm centering. Rectangular flanges are commonly used.