2311 K Bearing

1.Product Introduction: The double-row heavy-duty model of self-aligning ball bearings (2311K), with an inner diameter of 55mm and a tapered hole (1:12), featuring double-row steel balls and a steel cage, suitable for heavy-duty equipment.
2.Structure Type: Inner ring (with tapered hole 1:12) + outer ring (with thick-wall spherical raceway) + double-row steel balls + steel cage, open type (equipped with a grease filling port).
3.Size Range: Inner diameter: 55mm (tapered hole 1:12), outer diameter: 120mm, width: 43mm.
4.Material: Inner ring / outer ring: GCr15, rolling elements (steel balls): GCr15, cage: steel (heavy-duty resistant).
5.Accuracy: Conventional P0 grade, heavy-duty precision models are of P6 grade.
6.Application Fields: Heavy-duty motors (11kW), mining machinery (small conveyors), auxiliary axes of construction machinery (rollers), large water pumps (7.5kW).
7.Key Inspection Items: Consistency of double-row steel balls, accuracy of the tapered hole, radial load-bearing capacity (≥ 50kN), hardness of the outer ring raceway (HRC58 - 62).

Product Description

2311 K Bearing: High-Temperature Resistant, Heavy-Load Solution

When your machinery operates in extreme conditions, you need a bearing that won't buckle under pressure. The 2311 K bearing is engineered precisely for these challenges. Featuring a tapered bore design (1:12), double-row steel balls, and a robust cage, this self aligning ball bearing delivers unmatched durability in high-temperature (up to 150°C) and heavy-load scenarios across metallurgical and heavy industrial equipment.

Technical Specifications

Parameter Specification
Dimensions 55 mm ID (Tapered 1:12) × 120 mm OD × 43 mm Width
Load & Temperature 380 kN dynamic load capacity; Operating range -50°C to +150°C
Precision & Material P5 precision grade; High-purity GCr15 steel (HRC 58-62) for long-life ball bearings
Design Features Double-row self aligning bearing geometry with optional ceramic-coated cages

Key Advantages

  • Built for Extreme Environments: Continuous high-temperature operation with specialized heat treatment for self aligning ball bearings.
  • Heavy Load Handling: Handles severe axial and radial forces in mining conveyors, construction rollers, and pumps.
  • Friction & Noise Reduction: P5 precision grinding reduces operational vibration and noise to sub-35dB levels.

Where It Excels

  • Rolling Mill Roll Necks: Handles heavy radial loads in steel mill roller bearing and ball bearing positions.
  • Furnace Conveyors: Ceramic-coated self aligning bearings resist slag corrosion in high-temperature zones.
  • Continuous Casting Equipment: Interchangeable ISO-compliant bearing designs fit seamlessly into legacy machinery.

Quality Assurance & Delivery

Every 2311 K bearing undergoes ultrasonic flaw detection, hardness checks (HRC 60-64), and 72-hour stress trials. Standard bearings ship within 48 hours from regional hubs, with custom lead times cut to 20 days.

FAQs

Q: Can the 2311 K bearing handle sudden impact loads in rolling mills?
A: Yes! Its double-row steel balls and reinforced cage absorb heavy shock loads in demanding bearing applications.

Q: Do you provide installation support for legacy bearing retrofits?
A: Our engineering team offers free on-site mapping and CAD blueprints for custom self aligning ball bearing setups.

Q: What lubricants work best for high-temperature ball bearings?
A: We recommend specialized synthetic greases formulated for high-temperature self aligning bearing operation.

Contact Us

Upgrade to Reliability with the 2311 K Bearing

Contact our engineering team to request CAD models, technical advice, or custom quotes for your equipment.

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