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TR

The three-row roller slewing bearing features three independent rows of rollers arranged for optimal performance, offering the highest stiffness and load capacity relative to its diameter. This design allows each row of rollers to operate independently, distributing loads evenly and efficiently. Available in configurations with internal, external, or no gears, this bearing type provides versatility for various industrial applications. It excels in heavy-duty machinery such as cranes, excavators, and offshore equipment where robustness, stability, and precise load handling are essential. The three-row roller slewing bearing is engineered to deliver reliable performance and longevity, meeting the stringent demands of modern industrial sectors.

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

Outer diameter (Do)

Weight

Inner diameter (di)

NO.	Product Number	Gear type	Outer diameter (Do)	Weight	Inner diameter (di)
1	Q16349001	No Gear	48.560 inch	1,700 lbs	33.000 inch
2	Q16350001	No Gear	56.890 inch	2,450 lbs	41.535 inch
3	Q16351001	No Gear	77.250 inch	3,400 lbs	59.880 inch
4	Q16352001	No Gear	93.000 inch	5,630 lbs	72.500 inch
5	Q16353001	No Gear	118.583 inch	6,280 lbs	97.638 inch
6	Q16354001	No Gear	122.480 inch	3,500 lbs	107.638 inch
7	Q16356001	No Gear	158.000 inch	10,100 lbs	136.500 inch
8	Q16387001	No Gear	207.480 inch	13,200 lbs	187.795 inch
9	Q16366001	No Gear	236.220 inch	25,800 lbs	210.236 inch
10	Q16376001	Internal Gear	54.530 inch	950 lbs	41.760 inch
11	Q16377001	Internal Gear	64.173 inch	2,650 lbs	46.850 inch
12	Q16378001	Internal Gear	70.500 inch	3,550 lbs	50.200 inch
13	Q16379001	Internal Gear	87.244 inch	3,460 lbs	68.032 inch
14	Q16380001	Internal Gear	108.189 inch	6,000 lbs	85.433 inch
15	Q16381001	Internal Gear	120.866 inch	10,820 lbs	97.008 inch
16	Q16382001	Internal Gear	125.620 inch	5,800 lbs	106.333 inch
17	Q16383001	Internal Gear	155.512 inch	10,550 lbs	131.339 inch
18	Q16384001	Internal Gear	187.402 inch	14,200 lbs	162.992 inch
19	Q16385001	External Gear	228.000 inch	24,950 lbs	198.000 inch
20	Q16367001	External Gear	57.100 inch	1,250 lbs	42.500 inch
21	Q16368001	External Gear	71.338 inch	1,600 lbs	57.000 inch
22	Q16369001	External Gear	97.795 inch	4,400 lbs	76.850 inch
23	Q16370001	External Gear	115.800 inch	10,000 lbs	90.500 inch
24	Q16371001	External Gear	152.756 inch	11,130 lbs	129.921 inch
25	Q16372001	External Gear	170.079 inch	13,830 lbs	144.882 inch
26	Q16373001	External Gear	210.968 inch	14,330 lbs	187.795 inch
27	Q16388001	External Gear	233.000 inch	25,500 lbs	203.000 inch

Features and advantages of QIBR TR series three-row cylindrical roller slewing bearings

The QIBR TR series three-row cylindrical roller slewing bearings come with multiple significant features and advantages, including:

1. QIBR TR series three-row cylindrical roller slewing bearings have excellent load capacity for demanding applications

The QIBR TR series three-row cylindrical roller bearings are engineered to simultaneously handle radial and axial forces in multiple directions, excelling under heavy loads and impact conditions.

2. Superior stability and durability for QIBR TR series three-row cylindrical roller slewing bearings

With three rows of rollers to bear the load, the QIBR TR series provides higher operational stability, enhancing equipment reliability and extending its lifespan.

3. Customized service of QIBR three-row cylindrical roller slewing bearings TR series

QIBR TR series three-row cylindrical roller slewing bearings can provide customized service and design the bearings according to the specific needs, which can meet the demands of different industries and working conditions.

Performance enhancements and solutions of QIBR TR series three-row cylindrical roller bearings

1. Enhancing bearing material performance

The QIBR TR series three-row cylindrical roller slewing bearings can be equipped with high-temperature-resistant spacer blocks and other advanced materials to enhance load capacity and extend service life.

2. Improvement of bearing rotational accuracy

QIBR three-row cylindrical roller bearings TR series are manufactured with state-of-the-art processing equipment and techniques, including precision heat treatment and advanced machining centers. These processes significantly improve the geometric accuracy of the inner and outer rings, reduce machining errors, and enhance the rotational accuracy and stability of the bearings.

3. Less maintenance, fewer replacements

The QIBR TR series three-row cylindrical roller slewing bearings incorporate seals that prevent external contaminants from entering and reduce the risk of grease leakage. Additionally, the lubrication holes enable convenient grease application, improving bearing longevity and minimizing maintenance and replacement expenses.

4. Lubrication management

The QIBR TR series three-row cylindrical roller slewing bearings utilize high-quality lubricating grease to enhance temperature resistance and corrosion protection, ensuring stability under various loads and environmental conditions. A structured lubrication schedule is recommended, typically every 250 hours, with adjustments based on operating intensity to maintain optimal performance.

By optimizing materials, precision manufacturing, and lubrication management, the QIBR TR series three-row cylindrical roller slewing bearings deliver enhanced performance and meet the rigorous demands of modern applications.

Main application fields of QIBR three-row cylindrical roller slewing bearings TR series

Construction and building

The QIBR TR series three-row cylindrical roller slewing bearings deliver reliable rotational support for cranes, excavators, and other construction machinery, ensuring stability during operation.

Energy and mining

Designed to withstand complex loads, the QIBR TR series three-row cylindrical roller slewing bearings are ideal for wind turbines, solar tracking systems, and mining equipment.

Drilling platforms

The QIBR TR series three-row cylindrical roller slewing bearings provide robust rotational support and can bear heavy loads of drill bits and other equipment. They ensure stable performance even in harsh offshore environments, making them a trusted choice for offshore drilling platforms.