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McGill Brand Needle Bearings
This document provides information about different types of needle roller bearings. It describes Cagerol needle bearings which use rollers with end reliefs to increase load ratings by up to 20% compared to standard designs. It also describes Guiderol needle bearings which are suited to applications requiring slower speeds, angular rigidity, high static capacity needs, and limited radial space. The document provides details on bearing components, lubrication methods, seal options, application conditions suited to each type, and examples of common applications that use needle bearings.
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McGill Brand Needle Bearings
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- 2. Needle Rollers Steel Cage Machined Outer ring Machined racecage type Needle roller bearing Channel-shaped outer ring construction Outer ring riding cage Bore Size: 0.625 - 9.25” Used in applications with: High dynamic load Higher speeds Limited radial space Cagerol® Needle Bearings
- 3. Advantage of theCagerol® End-Relieved Roller Cagerol® bearings utilize rollers with end reliefs to achieve increased bearing ratings Up to a 20% increase in basic dynamic rating over uncrowned roller designs McGill Design provides for higher published load ratings than the competition MR 16 Catalog Dynamic Load Rating 4000 5000 6000 7000 8000 9000 McGill IKO INA RBC Torrington MR Competitors Lbs Comp. 1 Comp. 2 Comp. 4Comp. 3
- 4. Needle Rollers Machined Outer Retaining Band Machined race full complementneedle roller bearing Rollers necked at center Guide rail integral with outer race Retaining band retains rolling elements Applications with: Slower speeds Angular rigidity High static capacity needs Limited radial space Guiderol® Needle Bearings
- 5. Separable Inner Ring –Use instead of running directly on shaft – Permits use of unhardened shaft Relubrication feature in bore of inner ring Used with Cagerol® and Guiderol® Bearings Inner Ring Lube Groove Needle Roller Bearing Inner Rings
- 6. Available forCagerol® or Guiderol® Bearings Rubber lip seal Bonded to metal cup 250 °F (120o C) max. temperature High Temperature Seal Lip Material – Special Option – +450 °F (+230 o C) max. temp. Seal can have lip facing: – Inward (-S, -SS) – Outward (-RS, -RSS) – Combination Inward/Outward (-SRS) -S -SS -RS -RSS -SRS Needle Roller Bearing Seal Options
- 7. Oil holesand lube groove provided in – Outer ring outside diameter – Inner ring inside diameter Sealed bearings factory filled with grease – Lithium soap thickened NLGI 1 – Temperature range of -20°F to 250°F (-10°C to 120°C) Unsealed bearings have a rust preventative oil coating only Relubrication interval depends on speed, temperature, environment, and loads Needle Roller Bearing Lubrication Outer Ring Lube Groove Inner Ring Lube Groove Outer Ring Oil Hole
- 8. Application Conditions Use Cagerol® Bearings Use Guiderol® Bearings Limited radialspace Thrust supported by other means Higher dynamic load rating needed Higher static load rating needed Moderate to high speeds Low to moderate speeds Oscillating applications More misalignment ( .001 in/in max) Misalignment not greater than .0005 in/in Lower internal running friction needed Greater internal lubricant reservoir needed Which Needle Bearing is Best for You?
- 9. Cranes Sheaves Crawler track roller Pumps Hydraulic gear pumps Vane pumps Engineered Class Chain Industrial Equipment Transmissions Bevel pinion shaft Idler gear shaft Planetary gears Pilot shafts Printing Presses Oil Field Equipment Lift Trucks Material Handling Extendable Conveyors Metal Forming Needle Bearings Assure Operation in Many Applications