619/670 MA
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
619/670 MA
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
192 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
670 mm
Bore diameter tolerance
-0.05mm to 0
Outside diameter
900 mm
Outside diameter tolerance
-0.06mm to 0
Width
103 mm
Width tolerance
-0.75mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
151971 lbf
Radial static load rating
337213 lbf
Limiting speed
1 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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619/670 MA Bearing Product Overview & Core Advantages
The 619/670 MA is a single row deep groove ball bearing designed for applications requiring high radial load capacity and precision performance. Characterized by its open design and P6 tolerance class, this bearing is engineered for high reliability in demanding industrial environments. Its robust construction from chrome steel components ensures exceptional durability and long service life, making it an ideal solution for heavy-duty machinery where radial load support is paramount.
619/670 MA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| 619 | Deep Groove Ball Bearing Series | Indicates the standard deep groove design optimized for radial loads. |
| 670 | Bore Diameter (670 mm) | Specifies the large internal diameter for heavy shaft applications. |
| MA | Machined Brass Cage, Roller Guided | Denotes a high-strength, stainless steel cage for superior guidance and stability at moderate speeds. |
619/670 MA Bearing Structural Features & Performance Benefits
- High Radial Load Capacity: Engineered with a single row deep groove raceway, this bearing delivers a radial dynamic load rating of 151,971 lbf and a radial static load rating of 337,213 lbf, providing robust support for heavy radial forces.
- Precision Performance: Manufactured to P6 tolerance class with a standard radial internal clearance (CN), ensuring precise running accuracy and minimal vibration for smooth operation.
- Optimized Component Materials: Rings and balls made from chrome steel offer high hardness and wear resistance, while the stainless steel cage provides excellent corrosion resistance and mechanical strength.
- Open Design Flexibility: The open seal type allows for custom lubrication schemes, suitable for applications where specific lubricants or frequent re-lubrication is required.
- Broad Temperature Range: Operates effectively within a temperature range of -30°C to 120°C, accommodating various industrial environments.
619/670 MA Bearing Typical Application Areas
- Heavy Industrial Machinery: Gearboxes, large conveyors, and industrial fans.
- Mining & Construction Equipment: Crushers, vibrating screens, and heavy-duty pulleys.
- Power Generation: Turbines and generator sets requiring large bore bearings.
- Paper & Steel Mill Machinery: Rolling mills and large processing equipment.
- Marine & Offshore Applications: Propulsion systems and deck machinery.
