Product Details

Kaydon Cross Roller Slewing Ring Bearing

Specification

ZZ Cross Roller Slewing Ring Bearings are high-precision bearings designed for applications requiring the simultaneous handling of radial, axial, and moment loads. These bearings feature a cross roller design, in which cylindrical rollers are arranged alternately at right angles to one another, allowing for optimal load distribution and superior stiffness. ZZ’s cross roller slewing ring bearings are known for their compactness, durability, and smooth operation, making them ideal for demanding industries such as robotics, heavy machinery, renewable energy, and aerospace.

Part Number	Gear	Bearing Type	Do	di	H	Ho	Hi	Dr	Moment Load Rating
16318001	Without Gear	Standard	11.811"	5.512"	1.417"	1.181"	1.181"	-	7530 ft-lbs
16319001	Without Gear	Standard	15.886"	9.055"	2.165"	1.85"	1.85"	-	20140 ft-lbs
16337001	External Gear	Standard	16"	9.19"	2.17"	1.85"	1.85"	14.88"	13190 ft-lbs
16338001	External Gear	Standard	23.333"	13.75"	2.75"	2.5"	2.5"	-	69470 ft-lbs
16328001	Internal Gear	Standard	26.7"	18.667"	2.5"	2"	2"	-	65430 ft-lbs
16320001	Without Gear	Standard	27.362"	18.779"	3.031"	2.244"	2.244"	27.283"	65660 ft-lbs
16339001	External Gear	Standard	27.362"	18.78"	3.03"	2.24"	2.24"	26.38"	65660 ft-lbs
16340001	External Gear	Standard	33.627"	26.535"	2.205"	1.752"	1.752"	-	77600 ft-lbs
16321001	Without Gear	Standard	35.312"	26.625"	2.953"	2.863"	2.863"	35.251"	116170 ft-lbs
16329001	Internal Gear	Standard	36"	24.16"	3.88"	3.38"	3.38"	-	213180 ft-lbs
16341001	External Gear	Standard	36.333"	24.5"	4.69"	3.88"	3.88"	35.5"	274290 ft-lbs
16330001	Internal Gear	Standard	41.5"	30.32"	4.19"	4"	4"	-	362220 ft-lbs
16331001	Internal Gear	Standard	41.97"	30.828"	3.35"	2.95"	2.95"	41.929"	211160 ft-lbs
16342001	External Gear	Standard	45.05"	34.18"	3.93"	3.47"	3.47"	42.84"	223060 ft-lbs
16322001	Without Gear	Standard	46.25"	34.25"	4.25"	3.88"	3.88"	-	425900 ft-lbs
16343001	External Gear	Standard	51.04"	40"	4"	3.5"	3.5"	-	396330 ft-lbs
16332001	Internal Gear	Standard	54.74"	44.4"	4.5"	4.13"	4.13"	-	460450 ft-lbs
16323001	Without Gear	Standard	56.38"	46.77"	3.82"	3.43"	3.43"	56.295"	482960 ft-lbs
16344001	External Gear	Standard	63.15"	47.48"	5.118"	4.409"	4.409"	61.063"	861070 ft-lbs
16345001	External Gear	Standard	70.51"	53.54"	5.04"	4.33"	4.33"	-	801340 ft-lbs
16333001	Internal Gear	Standard	78.819"	62.913"	5.906"	4.921"	4.921"	-	1315740 ft-lbs
16324001	Without Gear	Standard	85"	74"	3.75"	3.25"	3.25"	84.88"	956430 ft-lbs
16346001	External Gear	Standard	85.866"	75.25"	3.3"	2.8"	2.8"	-	686710 ft-lbs
16325001	Without Gear	Standard	95"	82"	4"	3.5"	3.5"	94.875"	1450300 ft-lbs
16347001	External Gear	Standard	100.667"	84"	6.5"	4"	4"	98.75"	1557670 ft-lbs
16334001	Internal Gear	Standard	114"	95"	6"	5.5"	5.5"	-	2389570 ft-lbs
16335001	Internal Gear	Standard	121.496"	97.717"	6.772"	6.299"	6.299"	-	3797780 ft-lbs
16326001	Without Gear	Standard	131.89"	112.205"	7.874"	7.087"	7.087"	131.25"	4185500 ft-lbs
16336001	Internal Gear	Standard	142"	123.2"	6"	5.5"	5.5"	-	4057130 ft-lbs
16327001	Without Gear	Standard	158.661"	140.945"	8.819"	6.654"	6.654"	-	4879900 ft-lbs
16348001	External Gear	Standard	159.843"	141.732"	6.142"	5.748"	5.748"	-	4874640 ft-lbs
16393001	External Gear	Standard	209.843"	188.583"	7.047"	6.024"	6.024"	206.299"	8903140 ft-lbs

Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

1. What types of slewing bearings does ZZ Slewing Bearing provide?

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.

2. How do I choose the right bearing for my application?

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.

3. What materials does ZZ Slewing Bearing use for slewing bearings?

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)

4. How can ZZ Slewing Bearing achieve maximum service life?

Correct installation with flat surfaces.

Proper lubrication using grease.

Avoid overloading or shock loads over capacity.

Monitor operating conditions regularly to prevent debris entry.

5. What causes abnormal noise or vibration in bearings?

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.

6. What are lead times and lifetime guarantee?

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

7. Does ZZ provide installation and technical support?

Yes — ZZ Slewing Bearing offers:

Detailed installation manuals.

Online engineering support.

Guidance for lubrication, maintenance, and troubleshooting solution.

8. How do ZZ Slewing Bearing differ from competitors?

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.

ZZ Slewing Bearing (Shanghai) Co., Ltd

Leading Slew Drive & Slewing Bearing Manufacturer in China.

ZZ products are applied globally in solar tracking systems, wind power systems, satellite communications, and numerous other globally connected industries.