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RD 900

Three-row roller bearing slewing rings with axial-roller bearings are available in configurations without gears, with external gears, or with internal gears. These bearings are designed to efficiently handle axial and radial loads, making them suitable for heavy-duty applications such as cranes, excavators, and industrial machinery. The option for gears enables precise control and efficient power transmission, essential for equipment used in construction, mining, and offshore operations. This versatility allows for customization based on specific operational needs, ensuring optimal performance and reliability in challenging industrial environments.

Standard

GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN/VDEh,DIN/VDEh

Inner diameter

120mm-8000mm

Outer diameter

280mm-8000mm

Weight

20kg-8000kg

Structures

Outer Ring, Inner Ring, Spacer, Rolling element, Seal

Brand

QIBR/OEM/Neutral

Package

Standard Export Package

Material

42CrMo, 50Mn, or Stainless Steel

Applications

Hoisting machinery, construction machinery, material handling machinery, mining machinery, metallurgical machinery, medical instruments,ships and warships, radar,wind turbine

QIBR Model Selection

Filters

Gear type

Inner diameter (Di)

Outer diameter (Da)

Overall height (H)

Weight

NO.	Product Number	Gear type	Inner diameter (Di)	Outer diameter (Da)	Overall height (H)	Weight
1	191.20.1250.990.41.1502	External Gear	1103 mm	1461.6 mm	132 mm	542 kg
2	191.20.1400.990.41.1502	External Gear	1253 mm	1635.2 mm	132 mm	646 kg
3	191.20.1600.990.41.1502	External Gear	1453 mm	1831.2 mm	132 mm	731 kg
4	191.20.1800.990.41.1502	External Gear	1653 mm	2044.8 mm	132 mm	844 kg
5	191.20.2000.990.41.1502	External Gear	1853 mm	2236.8 mm	132 mm	912 kg
6	192.20.1250.990.41.1502	Internal Gear	1032 mm	1397 mm	132 mm	539 kg
7	192.20.1400.990.41.1502	Internal Gear	1162 mm	1547 mm	132 mm	630 kg
8	192.20.1600.990.41.1502	Internal Gear	1372 mm	1747 mm	132 mm	705 kg
9	192.20.1800.990.41.1502	Internal Gear	1552 mm	1947 mm	132 mm	829 kg
10	192.20.2000.990.41.1502	Internal Gear	1760 mm	2147 mm	132 mm	902 kg
11	191.25.1800.990.41.1502	External Gear	1619 mm	2076.8 mm	147 mm	1126 kg
12	191.25.2000.990.41.1502	External Gear	1819 mm	2268.8 mm	147 mm	1216 kg
13	191.25.2240.990.41.1502	External Gear	2059 mm	2516.4 mm	147 mm	1378 kg
14	191.25.2500.990.41.1502	External Gear	2319 mm	2786.4 mm	147 mm	1567 kg
15	191.25.2800.990.41.1502	External Gear	2619 mm	3096.4 mm	147 mm	1785 kg
16	192.25.1800.990.41.1502	Internal Gear	1520 mm	1981 mm	147 mm	1101 kg
17	192.25.2000.990.41.1502	Internal Gear	1728 mm	2181 mm	147 mm	1202 kg
18	192.25.2240.990.41.1502	Internal Gear	1944 mm	2421 mm	147 mm	1406 kg
19	192.25.2500.990.41.1502	Internal Gear	2214 mm	2681 mm	147 mm	1545 kg
20	192.25.2800.990.41.1502	Internal Gear	2500 mm	2981 mm	147 mm	1767 kg
21	191.32.2240.990.41.1502	External Gear	2022 mm	2552.4 mm	181 mm	1975 kg
22	191.32.2500.990.41.1502	External Gear	2282 mm	2822.4 mm	181 mm	2260 kg
23	191.32.2800.990.41.1502	External Gear	2582 mm	3136.4 mm	181 mm	2576 kg
24	191.32.3150.990.41.1502	External Gear	2932 mm	3476.4 mm	181 mm	2828 kg
25	191.32.3550.990.41.1502	External Gear	3332 mm	3889.6 mm	181 mm	3249 kg
26	191.32.4000.990.41.1502	External Gear	3782 mm	4351.6 mm	181 mm	3752 kg
27	192.32.2240.990.41.1502	Internal Gear	1908 mm	2458 mm	181 mm	2010 kg
28	192.32.2500.990.41.1502	Internal Gear	2178 mm	2718 mm	181 mm	2210 kg
29	192.32.2800.990.41.1502	Internal Gear	2460 mm	3018 mm	181 mm	2542 kg
30	192.32.3150.990.41.1502	Internal Gear	2820 mm	3368 mm	181 mm	2807 kg
31	192.32.3550.990.41.1502	Internal Gear	3190 mm	3768 mm	181 mm	3307 kg
32	192.32.4000.990.41.1502	Internal Gear	3652 mm	4218 mm	181 mm	3664 kg
33	191.40.2800.990.41.1502	External Gear	2562 mm	3136.4 mm	220 mm	3267 kg
34	191.40.3150.990.41.1502	External Gear	2912 mm	3515.6 mm	220 mm	3812 kg
35	191.40.3550.990.41.1502	External Gear	3312 mm	3911.6 mm	220 mm	4255 kg
36	191.40.4000.990.41.1502	External Gear	3762 mm	4363.2 mm	220 mm	4805 kg
37	191.40.4500.990.41.1502	External Gear	4262 mm	4867.2 mm	220 mm	5410 kg
38	192.40.2800.990.41.1502	Internal Gear	2460 mm	3038 mm	220 mm	3213 kg
39	192.40.3150.990.41.1502	Internal Gear	2794 mm	3388 mm	220 mm	3683 kg
40	192.40.3550.990.41.1502	Internal Gear	3190 mm	3788 mm	220 mm	4171 kg
41	192.40.4000.990.41.1502	Internal Gear	3624 mm	4238 mm	220 mm	4810 kg
42	192.40.4500.990.41.1502	Internal Gear	4128 mm	4738 mm	220 mm	5367 kg
43	191.50.3150.990.41.1502	External Gear	2885 mm	3571.2 mm	268 mm	5292 kg
44	191.50.3550.990.41.1502	External Gear	3285 mm	3955.2 mm	268 mm	5830 kg
45	191.50.4000.990.41.1502	External Gear	3735 mm	4411.2 mm	268 mm	6578 kg
46	191.50.4500.990.41.1502	External Gear	4235 mm	4915.2 mm	268 mm	7456 kg
47	192.50.3150.990.41.1502	Internal Gear	2736 mm	3415 mm	268 mm	5128 kg
48	192.50.3550.990.41.1502	Internal Gear	3120 mm	3815 mm	268 mm	5916 kg
49	192.50.4000.990.41.1502	Internal Gear	3576 mm	4265 mm	268 mm	6623 kg
50	192.50.4500.990.41.1502	Internal Gear	4080 mm	4765 mm	268 mm	7427 kg
51	191.50.5000.990.41.1502	External Gear	4735 mm	5419.2 mm	268 mm	8259 kg
52	191.50.5600.990.41.1502	External Gear	5335 mm	6019.2 mm	268 mm	9448 kg
53	191.50.6300.990.41.1502	External Gear	6035 mm	6715.2 mm	268 mm	10536 kg
54	191.50.6735.990.41.1502	External Gear	6470 mm	7147.2 mm	268 mm	11200 kg
55	192.50.5000.990.41.1501	Internal Gear	4584 mm	5265 mm	268 mm	8182 kg
56	192.50.5600.990.41.1502	Internal Gear	5184 mm	5865 mm	268 mm	9317 kg
57	192.50.6300.990.41.1502	Internal Gear	5880 mm	6565 mm	268 mm	10555 kg
58	192.50.6735.990.41.1502	Internal Gear	6312 mm	7000 mm	268 mm	11330 kg

Features and advantages of QIBR three-row cylindrical roller slewing bearing RD 900 series:

The RD 900 series has several notable features and advantages, primarily reflected in the following aspects:

1. High Load-bearing Capacity

The QIBR three-row cylindrical roller rotary bearing RD 900 series is designed to bear radial and axial loads simultaneously in multiple directions, making it suitable for heavy-duty and shock load applications.

2. Good Stability and Long Life

With three rows of rollers bearing the load, the QIBR three-row cylindrical roller rotary bearing RD 900 series offers higher operational stability, enhancing the reliability of the equipment and extending service life.

3. Diverse Structural Forms

The QIBR three-row cylindrical roller rotary bearing RD 900 series comes in three structural forms: no gear, external gear, and internal gear, allowing selection based on needs and adapting to various application scenarios. The RD 900 series can also provide customized services, designing bearings according to specific requirements to meet special demands and operating conditions of different industries.

Performance improvements and solutions for QIBR three-row cylindrical roller slewing bearing RD 900 series:

1.Improving Material Performance of the Bearing

The RD 900 series adopts high-strength materials to enhance the load-bearing capacity and lifespan of the bearing.

2.Optimizing Design and Manufacturing Processes

By optimizing the design and manufacturing processes of the rollers, the RD 900 series can improve operational accuracy, which is crucial for equipment requiring high-precision rotation. Precise manufacturing processes ensure good operating conditions even under high loads.

3.Reducing Maintenance and Replacement Needs

The RD 900 series is designed with seals and lubrication holes; the seals can prevent contaminants from entering the interior of the bearing and reduce grease leakage, while the lubrication holes facilitate grease injection so that extends service life and reduces maintenance and replacement costs.

Lubrication Management

The RD 900 series uses high-quality lubricants to improve temperature resistance and corrosion resistance, ensuring stability under different loads and environmental conditions. Establishing a lubrication schedule and it is recommended that lubricate every 250 hours and adjust the lubrication cycle appropriately based on operational intensity.

In summary, through measures such as optimizing materials and lubrication management, the performance of the RD 900 series can be significantly improved to meet increasingly stringent application requirements.

Main application fields of QIBR three-row cylindrical roller slewing bearing RD 900 series:

Large Cranes

The RD 900 series can withstand heavy loads during the lifting process of large cranes, such as tower cranes and port cranes.

Wind Power

The RD 900 series can bear large radial and axial loads, especially in strong wind conditions, QIBR three-row cylindrical roller slewing bearing RD 900 series provides strong support.

Mining Machinery and Metallurgical Equipment

The RD 900 series provides strong support in high-load and high-impact environments.

Heavy Machine Tools

For machine tools requiring high precision and heavy load support, the RD 900 series offers an excellent solution.