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Home Product 6311-2Z Bearing Double Shielded Deep Groove Ball Bearing 55x120x29mm High Speed Electric Motors
6311-2Z

6311-2Z Bearing Double Shielded Deep Groove Ball Bearing 55x120x29mm High Speed Electric Motors

6311-2Z Bearing
Double Shielded Ball Bearing
55mm Bore Ball Bearing
6311-2Z
6311-2Z Bearing: Double Shielded Ball Bearing with 55mm bore, designed for durable performance and contamination resistance in heavy-duty industrial machinery applications.
Categories:Power Transmission
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Product Description

The 6311-2Z Bearing is a Double Shielded Ball Bearing featuring a 55mm bore diameter, designed for robust performance in industrial machinery. With an outer diameter of 120mm and width of 29mm, this bearing integrates dual metallic shields on both sides to prevent contamination while retaining grease lubrication. It operates within a temperature range of -30°C to +120°C, supporting moderate radial and axial loads up to 96.5kN dynamic and 59kN static capacities. Pre-lubricated with high-grade grease, it ensures smooth rotation at speeds up to 6,300 rpm (oil) or 4,500 rpm (grease). Ideal for motors, pumps, and gearboxes, the 6311-2Z excels in durability and low maintenance but is not recommended for extreme loads or harsh chemical environments. Shields offer moderate protection compared to sealed variants.
Parameter Specification
Model 6311-2Z Bearing
Type Double Shielded Ball Bearing
Bore Diameter 55 mm
Outer Diameter 120 mm
Width 29 mm
Dynamic Load Rating (C) 83.2 kN
Static Load Rating (C0) 53.0 kN
Limiting Speed (Grease) 3400 rpm
Limiting Speed (Oil) 4200 rpm
Shield Type Double Shielded (2Z)
Material Chrome Steel (GCr15)
Weight 1.85 kg
Operating Temperature -30°C to +120°C
question:Do you offer technical selection services?
answer:Yes, we provide technical selection consulting to meet your project needs.
question:Can I self-schedule official courier pickup?
answer:Yes, you can self-schedule courier pickup via our customer portal.
question:How is售后 handled for refurbished products with faults?
answer:Verified faults in refurbished products qualify for repair, replacement, or refund per policy.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Do you offer technical selection services?
answer:Yes, we provide technical selection consulting to meet your project needs.
question:Can I self-schedule official courier pickup?
answer:Yes, you can self-schedule courier pickup via our customer portal.
question:How is售后 handled for refurbished products with faults?
answer:Verified faults in refurbished products qualify for repair, replacement, or refund per policy.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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