Product Description:
This bearing block is made of HT300 high-strength cast iron through
integral casting and precision CNC machining with significant core
advantages. Firstly, it has excellent structural strength with a
compressive strength of 300MPa, and its anti-deformation capacity
is 25% higher than ordinary cast iron bearing blocks, stably
withstanding radial loads (max 20kN) and axial loads (max 8kN)
under high-speed operation. Secondly, the machining precision is
strict: the bearing hole tolerance is controlled at IT5 grade
(aperture error ≤0.012mm), and the fit clearance with the bearing
outer ring is ≤0.005mm, ensuring no deflection during operation and
vibration noise ≤65dB. Thirdly, the surface undergoes double
anti-rust treatment of phosphating + painting, passing 72-hour salt
spray test without rust, extending service life to over 8 years in
humid, dusty and other industrial environments. In addition, the
base mounting holes adopt countersunk design, compatible with
M10-M20 bolt specifications, eliminating the need for additional
adjustment during installation and greatly improving assembly
efficiency.
Features:
- Material: HT300 high-strength cast iron (optional cast steel,
ductile iron)
- Machining precision: Bearing hole IT5 grade, fit clearance ≤0.005mm
- Anti-rust treatment: Phosphating + painting, 72-hour salt spray
test without rust
- Load capacity: Max radial 20kN, max axial 8kN
- Compatibility: Suitable for deep groove ball bearings, cylindrical
roller bearings, etc.
Technical Parameters:
Parameter | Details |
Material | HT300 cast iron (optional 45# cast steel, QT500 ductile iron) |
Compressive strength | 300MPa (cast steel version up to 450MPa) |
Bearing hole tolerance | IT5 grade (aperture error ≤0.012mm) |
Surface roughness | Ra≤1.6μm (bearing hole Ra≤0.8μm) |
Applicable bearing types | Deep groove ball bearings, cylindrical roller bearings,
self-aligning roller bearings |
Mounting hole 规格 | M10-M20 (customizable) |
Applicable temperature range | -30℃~120℃ |
Anti-rust grade | 72-hour salt spray test without rust |
Applications:
This bearing block is widely used in various rotating machinery
fields: In CNC machine tool spindle systems, its high-precision fit
ensures stable operation even when the spindle speed reaches
8000r/min. In motor transmission equipment, its high load capacity
adapts to the radial force requirements of 15kW-110kW motors. In
conveying machinery (such as belt conveyors, chain conveyors), its
dust-resistant and vibration-resistant properties ensure
trouble-free continuous operation of equipment. In rotating
mechanisms of construction machinery (such as cranes, excavators),
its adaptability to harsh environments can cope with complex
outdoor working conditions. In addition, it can also be used for
drive shaft support in printing machinery and textile machinery,
reducing equipment energy consumption and noise through precise
fitting.
Customization:
Comprehensive customization services are provided to meet special
scenario needs: In terms of size, it can be customized with bearing
hole diameters (φ10mm-φ200mm) and base lengths (50mm-500mm)
according to bearing models (such as 6205, NU210, etc.),
maintaining IT5 grade machining precision. Materials can be 45#
cast steel (increasing compressive strength to 450MPa) or QT500
ductile iron (enhancing toughness, suitable for impact load
scenarios). Surface treatment supports galvanizing (improving salt
spray resistance to 120 hours), chrome plating (reducing friction
coefficient) or sandblasted matte (suitable for food-grade
equipment). Structurally, it can be customized with double bearing
hole design, oil filling holes or sealing grooves to meet
integrated assembly needs. Sample proofing cycle is 3-5 days, and
100% quality inspection is conducted throughout mass production to
ensure consistency with design parameters.
Support and Services:
Our Product Technical Support team for CNC Milling Parts is
dedicated to assisting customers with any technical questions or
issues they may encounter. Whether you require help with
installation, troubleshooting, or maintenance, our experts are here
to provide you with the guidance you need.
In addition to technical support, we also offer a range of services
to enhance the performance and longevity of your CNC Milling Parts.
These services may include regular maintenance checks, calibration,
upgrades, and customization options to meet your specific
requirements. Our goal is to ensure that your CNC Milling Parts
operate at their optimal level, delivering precision and
reliability for your machining needs.
