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Link-Belt 21379 (Rexnord 10440524) is a 4-bolt split angle pillow block babbitt sleeve bearing with a 4-15/16" shaft diameter. The cast iron housing is powder coated for corrosion resistance. This rigid sleeve bearing is designed for heavy-duty industrial applications requiring a babbitt-lined sleeve. The unit includes a 1/2" NPT grease fitting and is not greased from the factory.
MODEL 21379
Contact supplier for technical support on: 800-626-2120
$1,299.64 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
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Typically Ships in: 1 day
Returnable: Yes
Base to centerline height (in)
4 1/2 in
Bearing Type
BABBITT SLEEVE BRG
Bolt Hole Spacing Width (in)
4 in
Bore length (in)
10 in
Bore size (in)
4 15/16 in
Distance between bolt holes (in)
15 in
Expansion Type
Non-Expansion Bearing (Fixed)
Grease fitting size
1/2 NPT
Height
11.00
Housing coating
Powder coated
Housing material
Cast iron
Housing style
Pillow block
Housing type
Pillow Block, Four Bolt, Split Angle
Length
18.00
Lubrication type
Not greased from factory
Maximum Temperature (C)
54 C
Maximum Temperature (F)
130 F
Mounting bolt hole slot length (in)
1 5/8 in
Mounting bolt size (in)
7/8 in
Mounting pad height (in)
1 7/8 in
Mounting pad length (in)
18 in
Mounting pad width (in)
7 in
Pipe Tap Size (in)
1/2 in
Required Distance for Cap Removal (in)
11 3/8 in
Sleeve material
Babbitt
Unit of dimension
in
Volume
0.349
Volume unit
Hectoliter
Width
10.75
Rigid sleeve bearing units provide compact and reliable usage in applications where continuous operation and uninterrupted service are required. Because the bearing material wears gradually, sudden breakdowns and costly maintenance are minimized. Sleeve bearings can also operate extremely quietly. The standard bearing materials of babbitt, bronze and cast iron will handle a wide variety of applications such as on log decks, sewage treatment equipment, furnaces and ovens, quiet operating fans and blowers, power plant dampers and stokers, oscillating shaft applications and other general conveying and power transmission machinery.
Babbitt bearings are used for moderate speeds and loads and ambient temperatures up to 130°F (54°C). Babbitt has the ability to give excellent service with a minimum of maintenance.
Bronze bearings are recommended for heavier loads, impact, and temperatures beyond the limits of babbitt bearings. They can be operated at ambient temperatures up to 300°F (149°C) providing satisfactory lubrication is available. Bronze has excellent all-around bearing characteristics; it has a relatively low coefficient of friction and a remarkable resistance to shock and wear.
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
Slew ring bearings, also referred to as slewing bearings, slewing rings, or turntable bearings, are forms of bearings designed to allow rotational motion between several components.
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