KF070TR3

3/4" Constant Section Bearings

KF070TR3 3/4" Constant Section Bearings
KF070TR3 3/4" Constant Section Bearings

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Part No.
Part No. KF070TR3

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Reali-Slim Open
Construction Single Row
Weight 3.16 lbs
Tolerance class ABEC 3F
ISO radial rating 8329 lbf
Seal type Open
For load direction Angular Contact

Main Dimensions

Bore diameter 7"
Bore diameter tolerance -0.0010"– 0"
Outside diameter 8.5"
Outside diameter tolerance -0.0012"– 0"
Width 0.75"
Width tolerance +.000 –.005"
Contact angle 30 °

Inner Ring Dimensions

Shoulder diameter inner ring 7.555"

Outer Ring Dimensions

Outer ring large-side face inner diameter 8.113"
Outer ring small-side face inner diameter 7.945"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 4932 lbf
Radial static load rating 10510 lbf
Axial static load rating 11770 lbf
Static load moment 30330 lbf
Lubrication Lubricated
Radial internal clearance 0.0000 – 0.0005"

Materials

Ring material Chrome Steel
Ball material Chrome Steel
Cage material Stainless Steel

Environment & Compliance

ROHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
Price: $ 208.37 / each
In Stock

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KF070TR3 Bearing Product Overview & Core Advantages

The KF070TR3 is a high-precision thin section angular contact ball bearing designed for applications requiring exceptional rigidity and precise motion control. This single row bearing features a 30° contact angle, optimized to handle combined radial and axial loads simultaneously. Manufactured to ABEC 3F precision standards, it delivers high running accuracy and reliability in compact, space-constrained designs. Its open construction allows for custom lubrication schemes, making it ideal for high-performance systems in demanding environments.

KF070TR3 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
KF Series designation for Reali-Slim® thin section bearings
070 Bore diameter code for 7-inch bore
T Cross section designation (0.75" width)
R Angular contact design with 30° contact angle
3 ABEC 3 precision class

KF070TR3 Bearing Structural Features & Performance Benefits

Premium Material Construction: Manufactured from chrome steel rings and balls with a stainless steel cage, this bearing offers excellent durability and corrosion resistance in demanding operating conditions.

High Load Capacity: The angular contact design provides exceptional load ratings with a radial dynamic load rating of 4932 lbf and axial static load rating of 11770 lbf, making it suitable for applications experiencing significant combined loads.

Precision Engineering: Built to ABEC 3F tolerance standards with tight radial internal clearance (0.0000 – 0.0005"), ensuring smooth operation, reduced vibration, and enhanced positioning accuracy.

Optimized Thin Section Design: The compact cross-section (0.75" width) with large bore diameter (7") enables significant weight and space savings while maintaining structural integrity and performance.

KF070TR3 Bearing Typical Application Areas

  • Robotics and Automation: Robot arm joints, rotary actuators, and precision positioning systems
  • Aerospace & Defense: Radar systems, satellite mechanisms, and aircraft control surfaces
  • Medical Equipment: CT scanners, MRI machines, and surgical robot joints
  • Semiconductor Manufacturing: Wafer handling robots, precision stages, and inspection equipment
  • Industrial Machinery: Rotary tables, indexing heads, and precision spindles
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