KG300AR0

1" Constant Section Bearings

KG300AR0 1" Constant Section Bearings
KG300AR0 1" Constant Section Bearings

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Part No.
Part No. KG300AR0

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Reali-Slim Open
Construction Single Row
Weight 22.5 lbs
Tolerance class ABEC-1
ISO radial rating 20480 lbf
Seal type Open
For load direction Angular Contact

Main Dimensions

Bore diameter 30"
Bore diameter tolerance -0.0018"– 0"
Outside diameter 32"
Outside diameter tolerance -0.0018"– 0"
Width 1"
Width tolerance +.000 –.010"
Contact angle 30 °

Inner Ring Dimensions

Shoulder diameter inner ring 30.742"

Outer Ring Dimensions

Outer ring large-side face inner diameter 31.451"
Outer ring small-side face inner diameter 31.258"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 16687 lbf
Radial static load rating 58760 lbf
Axial static load rating 46020 lbf
Static load moment 169600 lbf
Lubrication Lubricated
Radial internal clearance 0.0000 – 0.0005"

Materials

Ring material Chrome Steel
Ball material Chrome Steel
Cage material Brass

Environment & Compliance

ROHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
Price: $ 1901.26 / each
In Stock

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KG300AR0 Bearing Product Overview & Core Advantages

The KG300AR0 is a thin-section angular contact ball bearing engineered for applications demanding high precision and space optimization. As part of the Reali-Slim Open Bearings series with a 30° contact angle, it is specifically designed to handle significant combined loads—simultaneously supporting substantial radial and axial forces. Its single-row construction in a compact cross-section provides exceptional rigidity and rotational accuracy, making it an ideal component for high-performance machinery where weight and space are critical constraints. Manufactured to ABEC-1 precision tolerances, it ensures reliable operation in demanding environments.

KG300AR0 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
KG300AR0 Base model designation for a specific thin-section angular contact bearing size and series.
Open (Construction) No integral seals or shields, allowing for custom lubrication schemes and higher potential speeds.
ABEC-1 Specifies the precision tolerance class, ensuring controlled dimensional accuracy for smooth, predictable performance.

KG300AR0 Bearing Structural Features & Performance Benefits

  • High Rigidity & Load Capacity: The 30° contact angle and robust single-row design are optimized to support high combined radial and axial loads, with a static moment load capacity of 169,600 lbf.
  • Precision Engineering: Manufactured to ABEC-1 standards with tight bore and OD tolerances, this bearing guarantees precise shaft running and system accuracy.
  • Optimized Material Selection: Components made from chrome steel (rings and balls) and a brass cage provide excellent durability, wear resistance, and stable operation at temperatures from -30°C to 110°C.
  • Space-Saving Design: As a thin-section bearing with a 1" width and large 30" bore, it delivers maximum performance in a minimal envelope, crucial for compact machinery design.

KG300AR0 Bearing Typical Application Areas

This bearing is ideally suited for high-performance applications requiring a large bore and compact cross-section, including:
  • Robotics and automation arms
  • Aerospace control mechanisms and actuators
  • Medical imaging equipment (e.g., CT scanner gantries)
  • Semiconductor manufacturing equipment
  • Precision rotary tables and indexing heads
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