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  • Boston Gear XL3 Series Light-Duty Mounted Ball Bearing Flange Unit, 3 Bolt Holes, Setscrew Lock, Contact Seals, Ductile Iron
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Boston Gear XL3 Series Light-Duty Mounted Ball Bearing Flange Unit, 3 Bolt Holes, Setscrew Lock, Contact Seals, Ductile Iron

Available in multiple versions


Price: $17.11 - $90.90
Product Specifications
Brand Name Boston Gear
UNSPSC Code 31171500

This Boston Gear XL3 series light-duty mounted ball bearing ... Read full product description


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1 B004NEWILS
In Stock (1)
$56.40
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1 B004NEWIOU
In Stock (1)
$47.57
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1 B004NEWITK
In Stock (1)
$50.54
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1 B004NEWIV8
In Stock (1)
$61.00
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1 B004NEWIVI
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$61.00
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1 B004NEWJFI
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$73.60
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1 B004NEWJFS
Usually ships in 2 to 4 weeks
$73.60
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1 B004NEWJG2
In Stock (2)
$17.11
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1 B004NEWJGC
Usually ships in 2 to 4 weeks
$73.60
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1 B004NEWJYE
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$90.90
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1 B004NEWJYO
Usually ships in 2 to 4 weeks
$83.30
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Product Features

  • Cast ductile iron flanged housing with three bolt holes provides higher tensile strength and lighter weight than standard cast iron
  • Light-duty, deep-groove ball bearing insert for applications with light to moderate radial loads and light thrust loads
  • Contact seals on both sides of the bearing keep lubricant in and contaminants out
  • Setscrew lock for a three-point contact hold on the shaft
  • Extended inner ring for increased shaft support

Product Details


Product Description

This Boston Gear XL3 series light-duty mounted ball bearing flange unit with three bolt holes, contact and flinger seals, and a setscrew lock is designed for mounting onto bearing surfaces perpendicular to the shaft axis. This ready-to-mount flange unit has a cast ductile iron housing for higher tensile strength and lighter weight than standard cast iron. The deep-groove ball bearing insert in the housing is rated “light duty” for applications with light to moderate radial loads and light thrust loads. It has an extended inner ring for increased shaft support, and a convex sphered outer surface that compensates for misalignments. Contact seals on both sides of the bearing retain lubricant applied at manufacture and help protect against contaminants. The bearing locks onto the shaft with two setscrews for a three-point contact hold. This lock type minimizes ring distortion and vibration and is suitable for low to moderate speed applications where the shaft rotates in a single or reversing direction. Flanged bearing units are suitable for use in industrial and commercial applications including conveyors, fans and blowers, construction machinery, and processing equipment, among many others.

Mounted bearings combine a bearing mounted inside a housing unit. The bearing housing replaces the need for a casting or weldment to position the bearing securely for reliable operation, and its design determines the type of insert bearing. Insert bearings use rolling elements (ball, cylindrical, spherical, barrel, needle, spindled, or tapered) to maintain the separation between moving parts to reduce rotational friction, and to support radial and axial loads. Available in a variety of materials and mounting configurations, mounted bearings can be one- or two-piece, they can have an extended inner ring and locking device, and they can have seals and end caps that retain lubrication and protect the working parts of the bearing from environmental debris. Mounted bearings support shafts in a variety of mounting configurations (flange block, hanger, pillow block, and take-up block), and are used in a range of applications from light duty shaft guidance on conveyors to road building equipment and crushers.

Boston Gear manufactures gears, gear drives, bearings, valves, shaft collars, couplings, and other power and fluid transmission components. The company, founded in 1877, is headquartered in Charlotte, NC, and meets International Organization for Standardization (ISO) standard 9001:2008.


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