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Angle flanges – are used to connect fluid-carrying lines to hydraulic components.
Our high-quality angle flanges provide space-saving 90° line routing in hydraulic systems and reliably protect hydraulic hoses as well as pipelines against kinking and mechanical stress. Learn more...
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As robust hydraulic flanges or pump flanges, they are available in various bolt circle diameters and BSP port sizes, suitable for gear pumps of groups 2 and 3. Manufactured from durable steel or aluminum, our hydraulic accessories components ensure maximum sealing, corrosion protection, and safe use in industrial, construction, and agricultural machinery.
Angle flanges for gear pumps – Frequently Asked Questions
What are angle flanges for gear pumps and what is their purpose?
Angle flanges are specialized fittings that allow hydraulic or oil supply lines to be connected at a 90° angle to components such as gear pumps, motors, or valves in a space-saving way. Their purpose is to optimize line routing and simplify installation in confined spaces while ensuring a secure and leak-proof connection.
What materials are angle flanges typically made of and what seals are used?
Angle flanges are usually made of steel, often zinc-plated or coated for corrosion protection. For lighter applications, aluminum flanges are also used. Sealing is generally provided by O-rings or flat gaskets made of materials such as NBR or Viton to ensure media resistance and tightness.
What sizes and versions of angle flanges are common?
Angle flanges are available in different sizes, defined by bolt circle diameters (e.g. 30 mm, 40 mm, 51 mm, 62 mm) and connection threads (BSP G1/2", G3/4", G1"). They are typically mounted as 3-bolt flanges and supplied with bolts and spring washers (e.g. M6, M8). Standard connection is at a 90° angle. Special Bosch-DIN versions are also common.
Where are angle flanges used and what advantages do they offer?
Angle flanges are used in mobile and stationary hydraulic systems, e.g. in agricultural machinery, construction equipment, and industrial plants. They enable space-saving line routing, secure and tight connections, protect lines against kinking, are easy to install, and are suitable for high hydraulic pressures.
How are angle flanges installed and what maintenance is required?
Installation is carried out directly on the pump or component mounting surface using the supplied bolts and spring washers. Correct positioning and compliance with the recommended tightening torque are important. Maintenance is minimal – regular visual inspection for tightness, corrosion, and damage is recommended. In case of leakage, seals such as O-rings should be replaced.
What criteria are crucial for selecting the right angle flange?
Selection criteria include flange size and bolt circle, the correct connection thread (e.g. BSP), the material (steel or aluminum), and the pressure rating of the system. The selection should match the pump or component. Professional advice is recommended to ensure proper fit and secure installation.
What specific angle flange variants are available for gear pumps of group 2 (BG2) and group 3 (BG3)?
For BG2, angle flanges with bolt circles of 30 mm and 40 mm and thread sizes 1/2" and 3/4" are common, including Bosch-DIN variants (30 mm, 35 mm, 40 mm bolt circles). For BG3, flanges with bolt circles of 40 mm (3/4"), 51 mm (1"), and 62 mm (1 1/4") are available. Bosch-DIN variants for BG3 include 55 mm bolt circles with 3/4" or 1" threads. All flanges are supplied with mounting bolts.