Slewing Bearings

Cross Cylindrical Roller Slewing Bearing

Materials

Rings: 42CrMo, 50Mn, or C45 alloy steel (raceway hardness HRC 55-62 after quenching).  

Rollers: GCr15 high-carbon chromium steel (high wear resistance).  

Cage: Steel 20 or ZL102 cast aluminum alloy (lightweight and durable).  

Spacers: Nylon 6/66 (low friction and thermal stability).  

Size Range

External Diameter: 300–6,000 mm (customizable upon request).  

 Performance

Load Capacity: Axial ≤ 25,000 kN, radial ≤ 15,000 kN, moment ≤ 100,000 kN·m.  

Speed Range: Suitable for low to moderate rotational speeds (≤20 rpm).  


Techspecs

Cross roller slewing bearing--- No gear(110 Series)
Bearing ModelDimensionsMounting DimensionsStructural Dimensionweight  (kg)
DmmdmmHmmD1mmD2mmnmmdmmmLmmn1D3mmd1mmH1mmhmm
110.25.500602398755664342018M16324498502651080
110.25.560662458756264942018M16324558562651090
110.25.630732528756965642418M163246286326510100
110.25.710812608757766442418M163247087126510110
110.28.800922678828787223022M204067988027210170
110.28.9001022778829788223022M204068989027210190
110.28. 100011228788210789223622M2040699810027210210
110.28.1120124299882119810423622M20406111811227210230
110.32.12501390111091133711634026M24485124812528110350
110.32.14001540126091148713134026M24485139814028110400
110.32.16001740146091168715134526M24485159816028110440
110.32.18001940166091188717134526M24485179818028110500
110.40.200021781825112211018914833M306081997200310012900
110.40.224024182065112235021314833M3060822372243100121000
110.40.250026782325112261023915633M3060824972503100121100
110.40.280029782625112291026915633M3060827972803100121250
110.50.315033762922134328630145645M4284831473153122122150
110.50.35503763322134368634145645M4284835473553122122470
1 10.50.400042263772134413638646045M42841039974003122122800
110.50.450047264272134463643646045M42841044974503122123100
Cross roller slewing bearing--- External gear(111/112 Series)
Bearing ModelDimensionsMounting DimensionsStructural DimensionGear dataweight  (kg)
DmmdmmHmmD1mmD2mmnommdmmmLmmn1D3mmd1mmH1mmhmmbmmxMmmDemmz
111.25.500602398755664342018M163244985026510600.5562912380
112.25.5006628.8102
111.25.560662458756264942018M163245585626510600.5568913590
112.25.5606688.8112
111.25.630732528756965642418M163246286326510600.56772.8126100
112.25.6308774.494
111.25.710812608757766442418M163247087126510600.58850.8139110
112.25.7108854.4104
111.28.800922678828787223022M204067988027210650.58966.4118170
112.28.8001096894
111.28.9001022778829788223022M204068989027210650.581062.4130190
112.28.900101068104
111.28.10001228788210789223622M2040699810027210650.5101188116210
112.28.1000121185.696
111.28.1120124299882119810423622M20406111811227210650.5101298127230
112.28.1120121305.6106
111.32.12501390111091133711634026M24485124812528110750.5121449.6118350
112.32.1250141453101
111.32.14001540126091148713134026M24485139814028110750.5121605.6131400
112.32.1400141607.2112
112.32.16001740146091168715134526M24485159816028110750.5141817.2127440
112.32.1600161820.8111
111.32.18001940166091188717134526M24485179818028110750.5142013.2141500
112.32.1800162012.8123
111.40.200021781825112211018914833M306081997200310012900.5162268.81399000
112.40.2000182264.4123
111.40.224024182065112235021314833M306082237224310012900.5162492.81531000
112.40.2240182498.4136
112.40.250026782325112261023915633M306082497250310012900.5182768.41511100
112.40.2500202776136
111.40.280029782625112291026915633M306082797280310012900.5183074.41681250
112.40.2800203076151
111.50.315033762922134328630145645M4284831473153122121100.52034761712150
112.50.3150223471.6155
111.50.355037763322134368634145645M4284835473553122121100.52038761912470
112.50.3550223889.6174
111.50.400042263772134413638646045M42841039974003122121100.5224329.61942800
112.50.4000254345171
111.50.45004726422134463643646045M42841044974503122121100.5224835.62173100
112.50.4500254845191
Cross roller slewing bearing--- Internal gear(113/114 Series)
Bearing ModelDimensionsMounting DimensionsStructural DimensionGear dataweight  (kg)
DmmdmmHmmD1mmD2mmnommdmmmLmmn1D3mmd1mmH1mmhmmbmmxMmmDemmz
113.25.500602398755664342018M163244985026510600.553677480
114.25.5006368.462
113.25.560662458756264942018M163245585626510600.554278690
114.25.5606428.472
113.25.630732528756965642418M163246286326510600.56494.483100
114.25.6308491.262
113.25.710812608757766442418M163247087126510600.56572.496110
114.25.710 8571.272
113.28.800922678828787223022M204067988027210650.58635.280170
114.28.8001063464
113.28.9001022778829788223022M204068989027210650.58739.293190
114.28.9001073474
113.28.100011228788210789223622M2040699810027210650.51082483210
114.28.100012820.869
113.28.1120124299882119810423622M20406111811227210650.51094495230
114.28.112012940.879
113.32.12501390111091133711634026M24485124812528110750.5121048.888350
114.32.1250141041.675
113.32.14001540126091148713134026M24485139814028110750.5121192.8100400
114.32.1400141195.686
113.32.16001740146091168715134526M24485159816028110750.5141391.6100440
114.32.1600161382.487
113.32.18001940166091188717134526M24485179818028110750.5141573.6113500
114.32.1800161574.499
113.40.200021781825112211018914833M306081997200310012900.5161734.4109900
114.40.2000181735.297
113.40.224024182065112235021314833M306082237224310012900.5161990.41251000
114.40.2240181987.2111
113.40.250026782325112261023915633M306082497250310012900.5182239.21251100
114.40.2500202228112
113.40.280029782625112291026915633M306082797280310012900.5182527.21411250
114.40.2800202528127
113.50.315033762922134328630145645M4284831473153122121100.5202628142150
114.50.3150222824.8129
113.50.355037763322134368634145645M4284835473553122121100.52032281622470
114.50.3550223220.8147
113.50.400042263772134413638646045M42841039974003122121100.5223660.8162800
114.50.400025366047
113.50.450047264272134463643646045M42841044974503122121100.5224166.81903100
114.50.4500254160167


Description

Design Principles Cross-Roller Arrangement: Rollers are alternately aligned at 90°, distributing loads evenly. Integrated Raceways: Precision-ground surfaces minimize friction and wear. Modular Design: Supports custom gear configurations (internal/external) and mounting holes. Performance Highlights High Rigidity: Crossed rollers maximize contact area, reducing deformation under load. Ultra-Precise Rotation: Runout tolerance ≤0.005 mm for critical applications. Long Service Life: Advanced heat treatment extends fatigue resistance by 30%.
Cross Cylindrical Roller Slewing Bearing

Features

Multi-Load Support

Handles axial, radial, and moment loads without additional bearings.

Space-Saving

Compact structure ideal for equipment with limited installation space.

Customizable

Options for gear types, seals, and non-standard dimensions.

Low Maintenance

Sealed-for-life designs reduce lubrication frequency.

Working Principle

Cross Cylindrical Roller Slewing Bearing
Load Distribution Axial & Radial Loads: Transferred through cross-arranged rollers, ensuring balanced stress distribution. Moment Loads: Resisted by diagonal roller contact, minimizing localized stress. Lubrication & Sealing Grease Lubrication: Standard for general applications (replenishment every 500–800 hours). Oil Lubrication: Recommended for high-speed or high-temperature environments. Sealing: Multi-layer seals prevent contamination from dust, water, and debris.

Application & Case

Cranes: Port cranes, tower cranes, and mobile crane slewing systems.  

Construction Machinery: Shield tunneling machines, excavators, and pile drivers.  

Radar & Telescopes: Precision rotation for radar antennas and radio telescopes.  

Industrial Equipment: Steel mill rollers, robotic arms, and automated production lines.  

Military Systems: Turret rotation mechanisms and missile launch platforms.


FAQ

NEWBEE bearing bearings use cross-arranged rollers to handle combined loads in a compact design, unlike single-row bearings.
Yes, with IP65 seals and corrosion-resistant coatings, they perform well in dusty, wet, or high-temperature conditions.
Internal gears suit driven systems with central pinions; external gears fit peripheral drive mechanisms.
Common causes include misalignment, overloading, or inadequate lubrication.

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