Radial Bearings
Lutco unground radial ball bearings are designed for applications where speeds and loads are moderate and where noise level requirements and running accuracy do not justify using more expensive precision ground bearings. Radial bearings can be customized to include many features that can satisfy demands of special applications. Our ball bearings are available with special bores and extended inner races. Bearings can be ordered sealed, shielded, or open to deliver the most cost-effective solution for your application.
Lutco Radial Bearing Features
- Full complement of balls for maximum bearing capacity
- Case carburized raceways for high wear resistance
- Cylindrical or spherical OD for mounting in straight or spherical bored housings
- Grease packed
- Various platings available for protection against corrosion
- Can be ordered open, shielded or sealed
- Limiting Speed 1200 RPM
Radial Bearing Styles
Standard
- Inch dimensional bearings
- ID: .375 to 1.25 in.
- OD: 1.125 to 2.5 in.
Flanged
- Integral flange on bearing OD
- Flange axially locates bearing in housing eliminating the need for housing shoulders or snap rings
Hex Bore
- Radial bearing with hex bore configuration for engagement with a hex shaft
- Other bore configurations available upon request
Flanged Hex Bore
- Flanged bearing with hex bore configuration for engagement with a hex shaft
- Other bore configurations available upon request
Extended Inner Race
- Radial bearing
- Inner race is extended with set screws for locking to the shaft
Flanged Extended Inner Race
- Flanged bearing
- Inner race is extended with set screws for locking to the shaft
Metric Spherical
- OD: 47mm to 62 mm
- Mount in housing with corresponding spherical inner surface
- Compensates for shaft or housing misalignment
- Utilize eccentric locking collar for shaft retention (optional)
Contact us to find out why leading OEMs rely on Lutco!
Radial Bearing Design
Construction
Lutco radial bearings consist of a full complement of precision steel balls, a machined inner race and a pair of cold formed outer races captured by a soft steel jacket. this design allows for retained seals, and extra deep raceways. the jacket on the OD allows for the bearing to be pressed into a housing made without close tolerances.
Full Complement of Balls
A full complement of balls offers more contact between the balls and races. this results in more resistance to brinelling from shock loads. carbon balls are standard. Alternate ball materials are available upon request. the grades of balls used range from 200 to 1000 depending on the specific application.
Internal Clearance (Radial & Axial)
Standard radial play is .002"/.008". Axial play is .005"/.020", depending on the size of the bearing.
Lubrication
Standard grease has a temperature range of –30°F to +325°F. Other greases are available upon specification.
Heat Treating
Lutco's heat treating processes include carburizing and carbonitriding. Inner and outer race surface hardness specification is Rc 59–63.
Eccentric Locking Collar
Lutco bearings are available with the same style eccentric locking collars as precision bearings.
Special Locking Devices
Keyways and cross drilled holes for pinning are among many available options depending upon application requirements.
Set Screws
The standard construction provides two 1⁄4"–28 cup point socket set screws spaced 120° apart. For severe applications, special lock patch, serrated point, or other set screw designs are available. Recommended set screw torque is 60 in-lbs.
Seal and Shield Options
LUTCO is the leader in sealed, full complement, unground bearings, servicing the needs of a wide range of industries. LUTCO provides various sealing and shielding options to meet challenging environmental demands. Seal/Shield designations are listed in the suffix of LUTCO bearing designs. See below for common options or call the factory for special applications.
PP Double Seal
This is our standard seal. The design is a single piece HY-CARR rubber seal.
P Single Seal
This is our standard seal. The design is a single piece HY-CARR rubber seal on flange side.
PP2 Super Seal
Recommended where severe conditions require superior sealing. Seal construction includes a two piece BUNA N rubber with a NYLON GS backing.
P2 Super Seal
Recommended where severe conditions require superior sealing on flange side. Seal construction includes a two piece BUNA N rubber with a NYLON GS backing.
NPP Nylon Double Shield
Recommended for light seal drag applications, grease retention, and minimal environmental protection.
NP Nylon Single Shield
Recommended for light seal drag applications, grease retention, and minimal environmental protection. Nylon shield on flange side only.
MPP Double Shielded
Steel shields on both sides.
MP Single Shielded
Steel shield on flange side only.
Radial Load Ratings
Load ratings printed in the design guide are based on ninety percent of the group surviving for 500 hours. Environment, shock loading, sealing, temperature, lubrication, heat, configuration of ball tracks and speeds under load, all directly influence bearing life. Printed ratings are to be used only as a guide in the design for a given application. Field testing is advised in order to assure the suitability of a bearing for a particular application. We do not recommend accelerated testing, as it may not be representative of actual field conditions.
All Lutco ball bearings will sustain a thrust load of 50% of the rated radial load. (the combined radial and thrust load should not exceed the indicated radial load.) It is suggested that if there is a question regarding the Lutco bearing capacity for a specific application, please call (508) 756-6296.
Product Design Guide
The Lutco Design Guide has detailed information including product specifications, technical drawings & measurements, load rating and testing data, interchange tables, conversion tables, unique applications, and more.
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