1209 K Bearing

1.Product Introduction: The model of self-aligning ball bearings (1209K), with an inner diameter of 45mm and a tapered hole (1:12), suitable for small and medium-sized tight-fitting equipment, taking into account both precision and stability.
2.Structure Type: Inner ring (with tapered hole 1:12) + outer ring (with spherical raceway) + single-row steel balls + engineering plastic cage, open type.
3.Size Range: Inner diameter: 45mm (tapered hole 1:12), outer diameter: 85mm, width: 19mm.
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 and medium-sized water pumps (4kW), motors (7.5kW), auxiliary shafts of machine tools (tight-fitting), conveying equipment (small conveyor belts).
7.Key Inspection Items: Taper of the tapered hole, radial load-bearing capacity (≥ 25kN), flexibility of self-aligning (no jamming).

Product Description

1209 K Bearing – Precision & Durability for Heavy-Duty Applications

When your machinery operates under relentless stress, the 1209 K bearing stands as your frontline defense. As a self-aligning ball bearing with a tapered bore (1:12 ratio), this compact component combines shock absorption, shaft misalignment compensation, and extreme heat resistance. At LUOYANG INNO BEARING CO., LTD, we have refined this industry workhorse through 30+ years of metallurgical expertise, ensuring it outperforms standard bearings in service lifespan and operational stability.

Technical Specifications

Parameter Value
Dimensions Inner Diameter 45 mm (Tapered 1:12) × Outer Diameter 85 mm × Width 19 mm
Load & Material Dynamic load capacity 32 kN; Hardened GCr15 chromium steel for long-life ball bearings
Precision & Cages ABEC-1 (P0) standard, P6 optional precision; Fiberglass-reinforced polyamide bearing cages
Self-Aligning & Temp ±2.5° angular misalignment tolerance; Operational range up to 500°C custom thermal stability

Key Advantages

  • Tapered Bore Design: 45mm tapered bore simplifies tight fits on shafts in pumps, motors, and conveyor bearings.
  • Self-Aligning Capability: Compensates for installation errors and shaft deflection to prevent stress concentration in self-aligning bearings.
  • Rigorously Tested & Certified: XRF steel purity checks, 25kN+ radial load trials, and 500+ thermal cycling tests for reliable ball bearings.

Where It Excels

  • High-Temperature Environments: Handles continuous heat in rolling mill guides and turbine shaft bearing positions.
  • Space-Constrained Installations: Compact 19mm width fits tight clearances in packaging lines and agricultural machinery rollers.
  • Vibration-Prone Systems: Self-aligning geometry dampens harmonic vibrations in mining crushers and pulp mill bearings.

Rapid Supply & Support

Over 1,000 standard 1209 K bearing units are stocked for 48-hour dispatch. Custom modifications deliver in 15–20 days, supported by step-by-step installation guides and optional IoT predictive wear analytics.

FAQs

Q: Can the 1209 K bearing handle intermittent peak loads over 35kN?
A: Yes! Our dynamic load rating is conservative, and burst testing confirms high peak capacity for short spikes in heavy-duty ball bearings.

Q: Do you provide P6-grade 1209 K bearings for medical or high-precision equipment?
A: Absolutely. We supply high-precision versions with tight roundness tolerances and compliant lubricants for specialized bearing applications.

Q: How do I confirm the tapered bore matches my shaft for self-aligning ball bearings?
A: Share your shaft parameters with our engineering team, and we will validate proper fitment within 4 hours.

Contact Us

Upgrade Your Machinery's Backbone with a 1209 K Bearing

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