Needle Roller Bearings

NeedleRollers

SteelCage

MachinedOuter ring

· Machined race cage 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 BearingsCagerol ® Needle Bearings

Advantage of the Cagerol ® End-Relieved RollerAdvantage of the Cagerol ® 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. 4 Comp. 3

NeedleRollers

MachinedOuter

RetainingBand

· Machined race full complement needle 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 BearingsGuiderol ® Needle Bearings

· 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 RingsNeedle Roller Bearing Inner Rings

Available for Cagerol® or Guiderol® Bearings

Rubber lip seal Bonded to metal cup 250 °F (120oC) max. temperature High Temperature Seal Lip Material

– Special Option

– +450 °F (+230oC) 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 OptionsNeedle Roller Bearing Seal Options

Oil holes and 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 LubricationNeedle Roller Bearing Lubrication

Outer RingLube Groove

Inner RingLube Groove

Outer Ring Oil Hole

Application Conditions

Use Cagerol® Bearings

Use Guiderol® Bearings

Limited radial space

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?Which Needle Bearing is Best for You?

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 ApplicationsNeedle Bearings Assure Operation in Many Applications