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Bearings • Slewing Bearings

Rotational rolling-element bearings used to support a heavy but slow-turning load in applications such as heavy machinery and windmills.

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  • Gear Products Inc

    Gear Products Inc. manufactures 10 series of slewing ring bearings that weigh between 52 lbs and 1,785 lbs., and are found in crane, energy, forestry, marine, mining and construction, towing and recovery, and utility applications. The slewing bearings feature 52, 84, 69, 101, 107, 125, 139, and 185 internal gear teeth. The bending moment capacities of each bearing include: 55,000 ft-lbs, 51,500 ft-lbs, 37,800 ft-lbs, 95,000 ft-lbs, 261,300 ft-lbs, more than 1.4 million ft-lbs, 77,800 ft-lbs, 242,900 ft-lbs, 700,000 ft-lbs, and more than 2.2 million ft-lbs.

  • Grainger Industrial Supply

    Grainger distributes slewing ring bearings manufactured by Igus. The various bearings feature maximum RPM of 80, 100, 150, 200, or 250; with static axial loads of 6070 lbs., 11240 lbs., 5620 lbs., 12364 lbs., 22480 lbs., or 17984 lbs.

  • igus Inc.

    Igus Inc. manufactures PRT slewing ring bearings that utilize self-lubricating, low-friction sliding elements in place of ball bearings. Hand clamp, drive plate, and mounting ring types are available. The company's standard slewing rings feature hard anodized aluminum or stainless steel inner and outer rings.

  • Kingsbury, Inc.

    Messinger (a Kingsbury brand) slewing ring bearings are robustly designed and precisely manufactured to support extreme axial, radial, and tilting moment loading in a single bearing unit. These bolt-down bearings are custom designed for a wide variety of applications. They are capable of handling a broad range of rotational and duty cycle requirements and are manufactured on state-of-the-art equipment that can handle sizes up to 25 feet (7.6m) in diameter. Messinger slewing ring bearings can be produced with either internal or external integral gear teeth.

  • RBC Bearings

    RBC Bearings manufactures and supplies slewing ring bearings for industrial, aerospace, and defense applications. The company's slewing rings feature capabilities ranging from 610 mm to 4,300 mm outside diameter. The bearings are available in sizes including 20" inside diameter to 140" outside diameter, and 40" inside diameter to 160" outside diameter - with thrust to 7 million lbs., 5 million lbs., 10 million lbs., and 20 million lbs.

  • Ritbearing

    Ritbearing distributes slewing ring bearings manufactured by Iraundi, MS, NKE, and RCBD. Used in wind power, off highway equipment, packaging machinery, robotics, cranes, drilling and mining, and satellite equipment applications; the bearings feature internal or external gear, along with ball, crossed, single or two row ball bearing design.

  • Rotek, Inc.

    Rotek Inc. manufactures slewing ring bearings from 12 inches to 50 feet in diameter. Featuring non-segmented and segmental designs up to 8,000 pounds, the bearing types include: turntable, light duty, single row ball, double row ball, cross roller, high speed, three row roller, roller/ball combination, wire race, and precision high performance.

  • Silverthin Bearing Group of Mechatronics, Inc.

    SilverThin Bearing Group produces slewing ring bearing types including: flanged, rectangular, rectangular high capacity, and rectangular cross roller. Depending on type, the bearings feature moment capacities from 141,000 ft-lbs, to 10 million ft-lbs., thrust capacities from 175,000 ft-lbs. to 6 million ft-lbs., and radial capacities from 35,000 lbs to 1.4 million lbs.

  • Universal Industrial Products, Inc.

    Universal Industrial Products Inc. manufactures single row ball, double-row ball, cross roller, and three-row roller slewing bearings from 200 mm to 6000 mm in diameter. The bearings have the ability to carry combined loads including axial, radial and tilting moment loads. The bearings can also be equipped gearless, with internal or external gears, or with fixing bolt holes.

  • VNC Bearing, Inc.

    VNC Bearing Inc. designs slewing bearings available in metric and inch sizes - with internal gear, external gear or no-gear design. The bearings are used in the medical, manufacturing, nautical, military, forestry, power, aerospace, surveillance, automotive, and robotics industries. Types include: double row, angular contact ball; turntable; single row, four point contact ball; single row, crossed roller; three row, roller; and ball/roller combined.

  • Kaydon Corp Bearings Div

    Kaydon Corp. designs and engineers 11 series of slewing ring bearings used in aerospace and defense, heavy equipment, industrial machinery, medical systems, renewable energy, and semiconductor manufacturing equipment applications.

  • LYC North America Inc

    LYC North America Inc. manufactures slewing ring bearings that can carry axial loads, radial loads, and tilting moment. Available with internal gear, external gear, external gear or non-gear, the company's slewing ring bearing types include: four-point contact ball bearings, double row angular contact ball bearings, cross cylindrical roller bearings, and three row-combined cylindrical roller bearings. The various bearings are used in lift and transport machinery, excavation machinery, building machinery, harbor machinery, cargo lifting machinery, high-precision antenna mounts, and missile launching pads.

  • PSL of America

    PSL of America Inc. manufactures slewing ring bearings up to 157" in diameter. Available with gearless, internal or external gear configurations, the bearings can control axial, radial and tilting moment loads. The bearings are used in construction equipment, wastewater machinery, radar antennas, packaging machinery, rescue vehicles, aerials, fellerbunchers, tunnel machinery, drilling equipment, and cleaning and bottling machines.

  • BFM Industrial Services, LLC

    BFM Industrial Services LLC is a provider of single-row slewing ball bearings, single-row cross roller slewing bearings, and triple-row roller slewing bearings. The various bearings are used in cranes, boom lifts, rollers, excavators, and semi-trucks; and can be teethless or feature outer and inner teeth.

  • Coastal Bearing Services

    Coastal Bearing Services manufactures, refurbishes and modifies slewing ring bearings up to 124" in diameter.