1208 K Bearing

1.Product Introduction: The model of self-aligning ball bearings (1208K), with an inner diameter of 40mm and a tapered hole (1:12), suitable for small tight-fitting shaft systems to prevent axial displacement.
2.Structure Type: Inner ring (with tapered hole 1:12) + outer ring (with spherical raceway) + single-row steel balls + engineering plastic cage, open type (which can be equipped with dust covers).
3.Size Range: Inner diameter: 40mm (tapered hole 1:12), outer diameter: 80mm, width: 18mm.
4.Material: Inner ring / outer ring: GCr15, rolling elements (steel balls): GCr15, cage: engineering plastic.
5.Accuracy: Conventional P0 grade, precision models are of P6 grade.
6.Application Fields: Small motors (5.5kW), agricultural machinery (harvesters), light industrial machinery (auxiliary shafts of printing machines), water pumps (3kW).
7.Key Inspection Items: Fit clearance between the tapered hole and the shaft (≤ 0.005mm), radial clearance, conformity of steel balls fitting.

Product Description

1208 K Bearing: Precision Engineered for Demanding Industrial Applications

When you need a bearing that combines compact design with exceptional durability, the 1208 K bearing delivers. Designed for small shaft systems requiring tight fits and resistance to axial displacement, this self-aligning ball bearing excels in high-temperature, high-load environments. With a tapered 1:12 inner bore and precision engineering, it is trusted across industries like metallurgy, medical devices, and port machinery. At LUOYANG INNO BEARING CO., LTD, we have refined this model over 30+ years to offer unmatched reliability for your equipment.

Technical Specifications

Parameter Value
Dimensions Inner Diameter 40mm (Tapered 1:12) × Outer Diameter 80mm × Width 18mm
Load Capacity & Speed 7.8kN dynamic / 3.9kN static load rating; Max speed 9,000 RPM (grease-lubricated) for ball bearings
Materials & Precision GCr15 steel races/balls; Standard P0 grade (P6/P4 available for ultra-low-noise bearing setups)
Self-Aligning & Temp Compensates for shaft misalignment up to 3°; Operating range 150°C+ (upgradable to 500°C)

Key Advantages

  • Self-Aligning Design: Compensates for angular shaft misalignment up to 3°, reducing wear in vibrating bearings.
  • High-Temperature Resilience: Advanced heat treatment ensures stable operation under severe thermal shock in self-aligning ball bearings.
  • Optimized Lubrication: Integrated grooves retain grease 40% longer than standard ball bearing designs.

Built for Your Industry's Toughest Challenges

  • Metallurgy & Heavy Machinery: High-purity steel variants handle thermal shock and high dynamic loads in rolling mill bearing positions.
  • Port Equipment: Saltwater-resistant coatings protect crane bearings against corrosion in coastal operations.
  • Medical & Agricultural: P6-grade ceramic hybrid ball bearings eliminate electromagnetic interference, while sealed variants extend service intervals.

Quality Assurance & Customization

Every 1208 K bearing undergoes 99.95% steel purity testing, tapered hole tolerance grinding (≤0.005mm), and simulated 10,000-hour stress trials under ISO 9001 and ISO 14001 certification.

FAQs

Q: Can the 1208 K bearing handle 500°C environments?
A: Yes! Our HT high-temperature variant uses specialized M50 steel and oxidation-resistant coatings for severe bearing applications.

Q: What is the service lifespan under heavy port crane loads?
A: Up to 100,000+ hours when utilizing our carburized steel heavy-duty self-aligning bearings.

Q: Do you offer P4-grade high-precision 1208 K bearings?
A: Yes, via our ultra-precision line featuring tight radial runout controls for medical and specialized ball bearings.

Contact Us

Need a 1208 K Bearing That Outlasts Your Equipment?

Contact our engineering team to share your operating parameters and receive an optimal 1208 K configuration proposal.

📩 Contact Our Engineers Today

Online Message

Learn about our latest products and discounts through SMS or email