ZZ Slewing Bearing

Heavy-duty Lazy Susan bearings

Heavy-duty Lazy Susan bearings are specialized bearings designed to support and rotate heavy loads. They are widely used in scenarios that require high load capacity and smooth rotation. These bearings typically consist of two metal rings with balls or rollers placed in between, forming a rolling mechanism that enables smooth 360-degree rotation. Common materials include high-strength steel, stainless steel, or aluminum alloy, ensuring durability and wear resistance over extended use.

No.
DL
mm
Ring DimensionGear ParameterGear TorqueN.W
kg
De
mm
D
mm
d
mm
H
mm
b
mm
m
mm
zxkNormalizing
kN
Q&T
kN
021.25.500644616384106605126+0.50.13752130
022.25.500646. 8616384106606105+0.50.14562130
021.25.560704676444106605138+0.50.13752146
022.25.560706. 8676444106606115+0.50.14562147
021.25.630790. 8746514106606129+0.50.14562173
022.25.630790. 474651410660896+0.50.16083170
021.25.710862. 8826594106606141+0.50.14562190
022.25.710862. 4826594106608105+0.50.16083187
021.30.800982. 4942658124808120+0.50.180111305
022.30.800988942658124801096+0.50.1100140307
021.30.9001086.41042758124808133+0.50.180111349
022.30.900108810427581248010106+0.50.1100140348
021.30.1000119811428581248010117+0.50.1100140396
022.30.10001197.61142858124801297+0.50.1120167391
021.30.1120131812629781248010129+0.50.1100140445
022.30.11201317.612629781248012107+0.50.1120167439
021.40.12501497.6142610741609012122+0.50.1135188784
022.40.12501495.2142610741609014104+0.50.1158219774
021.40.14001641.6157612241609012134+0.50.1135188870
022.40.14001649.2157612241609014115+0.50.1158219878
021.40.16001845.2177614241609014129+0.50.1158219995
022.40.16001852.8177614241609016113+0.50.11812501003
021.40.18002055.2197616241609014144+0.50.11582191147
022.40.18002060.8197616241609016126+0.50.11812501151
021.50.20002300.82215178519012016141+0.50.12413331794
022.50.20002300.42215178519012018125+0.50.12713751780
021.50.22402540.82455202519012016156+0.50.12413332017
022.50.22402552.42455202519012018139+0.50.12713752048
021.50.25002804.42715228519012018153+0.50.12713752246
022.50.250028162715228519012020138+0.50.13014182280
021.50.28003110.43015258519012018170+0.50.12713752553
022.50.280031163015258519012020153+0.50.13014182563
021.60.315035363428287222615020174+0.50.13775224428
022.60.31503537.63429287322715122158+0.50.14155744414
021.60.355039363828327222615020194+0.50.13775225012
022.60.35503933.63828327222615022176+0.50.14155744967
021.60.40004395.64278372222615022197+0.50.14155745706
022.60.400043954278372222615025173+0.50.14716525656
021.60.45004879.64778422222615022219+0.50.14155746293
022.60.450048954778422222615025193+0.50.14716526385

Structure and Features:

  • Dual-ring Structure: Balls or rollers are arranged between the inner and outer rings to reduce friction and rotational resistance.
  • High Load Capacity: Depending on the design, heavy-duty Lazy Susan bearings can support hundreds of kilograms or even several tons, making them suitable for large machinery or furniture.
  • Corrosion Resistance: For outdoor use, some bearings feature corrosion-resistant coatings or stainless steel construction to withstand harsh environments.
  • Various Sizes: Bearing sizes range widely, with diameters from a few centimeters to over a meter, accommodating different industrial needs.

Applications:

  • Industrial Turntables: Used in the manufacturing of large industrial equipment, providing rotating platforms for easier operation or loading/unloading.
  • Heavy Equipment: Found in engineering machinery and construction equipment, serving as foundational components for rotating drills, booms, or other heavy equipment.
  • Furniture and Display Racks: Used in large tables, display racks, and other furniture to enable smooth rotational functionality.
  • Stage Devices: In stage equipment, turntable bearings support rotating stages, allowing for multi-angle performance effects.

By adopting high-precision manufacturing processes and quality materials, heavy-duty Lazy Susan bearings ensure both high load capacity and long service life, along with low maintenance costs. This makes them an ideal choice for many applications requiring stability and rotational flexibility.

Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

ZZ Slewing Bearing supplies a full range of slewing bearings to meet different industrial needs:

  • Single row four point contact slewing bearings Application: medium loads, precise rotation.
  • Double row ball bearings  Application: higher radial and axial loads.
  • Cross roller bearings –Application: high rigidity, suitable for robots and machining centers.
  • Three row roller bearings – Application: extreme loads in heavy equipment.
  • Ball combine roller bearings –Application:  precise rotational adjustment applications.
  • Customized bearings – tailored for specific equipment requirements.

Typical selection parameter for ZZ clients:

Load type: axial, radial, and tilting moment.

Rotation RPM: ensures long service life.

Installation space & mounting dimensions: inner/outer ring diameter, bolt circle.

Precision & rigidity requirements: critical for cranes, excavators, and robots.

ZZ engineers provide professional selection guidance according to your equipment and drawings.

ZZ Slewing Bearing selects materials for strength, wear resistance, and long-term durability:

Slewing ring: 42CrMo, 50Mn, C45N, 40CrNiMo, C48E.

Special forging spare parts: carburized/hardened steels for gear teeth (20CrMnTi, 18CrNiMo7‑6).

Corrosion resistant: SS 304, 316L, duplex stainless steel.

Surface treatments: heat treatment, quenching, carburizing, induction hardening, and surface coating(Four-Layer Packing, Strong Anti-Rust Oil, Black Oxide Treatment, Jet Black Paint Finish, Hot-Dip Galvanizing (CGL), Electro-Galvanizing (EGL), Hot-Dip Galvanizing + Paint Finish)

Correct installation with flat surfaces.

Proper lubrication using grease.

Avoid overloading or shock loads over capacity.

Monitor operating conditions regularly to prevent debris entry.

Typical factors observed by ZZ engineers:

  • Insufficient or incorrect lubrication.
  • (dust, metal particles) in raceways.
  • Rolling element or track damage.
  • Uneven mounting surfaces or misalignment.
  • Incorrect bolt torque(below grade 8.8) or preloading.

In-stock: 3–7 days.

Custom: 2–6 weeks depending on size, load, and precision.

Warranty: 1 year

Lifetime Free Spare Parts: Glue, seals, steel ball

Yes — ZZ Slewing Bearing offers:

Detailed installation manuals.

Online engineering support.

Guidance for lubrication, maintenance, and troubleshooting solution.

Full range of materials and heat treatments for various load conditions.

High precision and strict quality inspection standards.

Engineering support before and after delivery.

Customization to exact equipment requirements.

Proven performance in cranes, excavators, robotics, wind turbines, and heavy machinery etc.

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