High-Quality Long Lasting Bearing Housings from China Suppliers and Factory for Optimal Performance
Key Functions
Secure bearing outer rings to transfer loads to machine structures.
Self-aligning designs (e.g., spherical housings) tolerate shaft/housing misalignment.
Integrated seals guard against dust, moisture, and debris.
Grease fittings/oil ports enable efficient relubrication.
Common Types
Material: Cast iron (SN), stamped steel (SD), or stainless steel.
Applications: Conveyors, agricultural machinery.
Mounting: Vertical or side-facing bolt patterns.
Applications: Motors, pumps.
Adjustability: Sliding design for belt/chain tensioning.
Compactness: Space-saving design for light-duty applications.
Materials & Coatings
Sealing Options
Contact seals for moderate environments.
Non-contact, high-temperature resistance.
For shaft-mounted protection.
Applications
Selection Criteria
Match housing bore to bearing outer diameter (e.g., SN series for 62/63 bearings).
Pillow blocks for radial loads; flange blocks for axial/radial combinations.
Choose seals and materials accordingly (e.g., FDA-approved grease for food processing).
Eccentric collars or set screws for secure shaft locking.
Advantages
Pre-aligned and pre-lubricated units reduce downtime.
Standardized dimensions per ISO/ANSI standards.
Robust construction for shock and vibration resistance.
Frequently Asked Questions
The primary function is to provide a secure mounting surface for a bearing, allowing the outer ring to remain stationary while transferring loads to the machine structure and protecting the bearing from contaminants.
Use a Pillow Block (SN/SNU) when the shaft is parallel to the mounting surface, typically for radial loads. Use a Flange Block (F/FC) when the shaft passes through a machine wall or frame at a right angle.
Many designs, specifically those using spherical outer ring bearings, are self-aligning. This helps compensate for minor shaft misalignments or mounting errors during installation.
Stainless steel (AISI 304 or 316) is the best choice for corrosive or washdown environments, such as those found in food processing or chemical plants.
Yes, in most standardized housings like the SN or F series, the insert bearing can be replaced independently of the housing, provided the housing remains in good condition.