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021

The externally toothed double-row ball slewing bearing is characterized by its relatively large axial and radial dimensions, making it well-suited for applications requiring robust load-bearing capabilities. This design is particularly advantageous for open assembly setups, facilitating straightforward installation and maintenance in various industrial contexts. The external teeth enable efficient power transmission and precise rotational control, essential for equipment such as cranes, excavators, and wind turbines. This bearing configuration ensures reliable performance under heavy loads and harsh operating conditions, emphasizing durability and operational flexibility in demanding environments.

Стандарт

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

Внутренний диаметр

120mm-8000mm

Наружный диаметр

280mm-8000mm

Вес

20kg-8000kg

Structures

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

Бренд

QIBR/OEM/Neutral

Упаковка

Standard Export Package

Материал

42CrMo, 50Mn, or Stainless Steel

Применения

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

QIBR Model Selection

Filters

Внутренний диаметр (d)

Наружный диаметр (D)

Общая высота (H)

Глубина (L)

Диаметр наконечника (da)

Тип шестерни

NO.	Product Number	Внутренний диаметр (d)	Наружный диаметр (D)	Общая высота (H)	Глубина (L)	Диаметр наконечника (da)	Тип шестерни
1	021.25.500	384 mm	616 mm	106 mm	32 mm	644 mm	External Gear
2	021.25.560	444 mm	676 mm	106 mm	32 mm	704 mm	External Gear
3	021.25.630	514 mm	746 mm	106 mm	32 mm	790.8 mm	External Gear
4	021.25.710	594 mm	826 mm	106 mm	32 mm	862.8 mm	External Gear
5	021.30.800	658 mm	942 mm	124 mm	40 mm	982.4 mm	External Gear
6	021.30.900	758 mm	1042 mm	124 mm	40 mm	1086.4 mm	External Gear
7	021.30.1000	858 mm	1142 mm	124 mm	40 mm	1198 mm	External Gear
8	021.30.1120	978 mm	1262 mm	124 mm	40 mm	1318 mm	External Gear
9	021.40.1250	1074 mm	1426 mm	160 mm	48 mm	1497.6 mm	External Gear
10	021.40.1400	1224 mm	1576 mm	160 mm	48 mm	1641.6 mm	External Gear
11	021.40.1600	1424 mm	1776 mm	160 mm	48 mm	1845.2 mm	External Gear
12	021.40.1800	1624 mm	1976 mm	160 mm	48 mm	2055.2 mm	External Gear
13	021.50.2000	1785 mm	2215 mm	190 mm	60 mm	2300.8 mm	External Gear
14	021.50.2240	2025 mm	2455 mm	190 mm	60 mm	2540.8 mm	External Gear
15	021.50.2500	2285 mm	2715 mm	190 mm	60 mm	2804.4 mm	External Gear
16	021.50.2800	2585 mm	3015 mm	190 mm	60 mm	3110.4 mm	External Gear
17	021.60.3150	2872 mm	3428 mm	226 mm	84 mm	3536 mm	External Gear
18	021.60.3550	3272 mm	3828 mm	226 mm	84 mm	3936 mm	External Gear
19	021.60.4000	3722 mm	4278 mm	226 mm	84 mm	4395.6 mm	External Gear
20	021.60.4500	4222 mm	4778 mm	226 mm	84 mm	4879.6 mm	External Gear

Features and advantages of QIBR double-row different-diameter ball slewing bearing 021 series

QIBR double-row different-diameter ball slewing bearing 021 series has many significant features and advantages, playing a key role in various fields, mainly reflected in the following aspects:

1.The efficient transmission capability of QIBR double-row different-diameter ball slewing bearing 021 series

The design of external teeth of different-diameter ball for QIBR double-row different-diameter ball slewing bearing 021 series allows direct connection to the gear drive system, thereby achieves efficient power transmission. This reduces additional transmission components such as chains or belts, reducing mechanical losses and maintenance requirements.

2.The good stability and long life of QIBR double-row different-diameter ball slewing bearing 021 series

The configuration of the double-row balls of the QIBR double-row different-diameter ball slewing bearing 021 series improves the stability of the bearing, reduces system vibration and noise, and improves the smoothness and reliability of operation. The optimized contact angle and load distribution can reduce internal wear of the bearing, thereby extend the service life of the bearing.

3. Customized service of QIBR double-row different-diameter ball slewing bearing 021 series

QIBR double-row different-diameter ball slewing bearing 021 series can provide customized services, and can design bearings according to specific needs to meet the special requirements and operating conditions of different industries.

The performance improvement and solution of QIBR double-row different-diameter ball slewing bearing 021 series

1. Improve material performance of the bearing

QIBR double-row different-diameter ball slewing bearing 021 series can adopt high-temperature sealing strips and other materials to improve the bearing capacity and service life.

2. Improve rotation accuracy of the bearing

The production of QIBR double-row different-diameter ball slewing bearing 021 series adopts advanced processing equipment and processes, such as machining center and precision heat treatment, to improve the geometric accuracy of inner and outer rings, reduce machining errors, and thus improve the rotation accuracy and stability of bearings.

3. Reduce the need for bearing maintenance and replacement

QIBR double-row different-diameter ball slewing bearing 021 series is designed with seals and lubricating oil holes. The seals can prevent contaminants from entering the bearing and reduce grease leakage; the lubricating holes are convenient for grease filling, the service life is extended, and the cost of maintenance and replacement is reduced.

4. Personalized design

QIBR double-row different-diameter ball slewing bearing 021 series can provide personalized size solutions for different occasions to meet special applications. This not only enriches the standards of bearings, but also provides effective guidance for manufacturers to meet the personalized needs of users.

In summary, by optimizing materials, manufacturing precision, personalized design and other measures, the performance of QIBR double-row different-diameter ball slewing bearing 021 series can be significantly improved to meet increasingly demanding application requirements.

Main application areas of QIBR double-row different-diameter ball slewing bearing 021 series

Machine tool industry

QIBR double-row different-diameter ball slewing bearing 021 series is used for machining centers, CNC machine tools, etc., to withstand high loads and high precision requirements.

Engineering machinery

QIBR double-row different-diameter ball slewing bearing 021 series provides stable rotation support for excavators, cranes and bulldozers.

Wind power generation

QIBR double-row different-diameter ball slewing bearing 021 series is used for the rotating part of the blade to withstand strong wind loads.

Construction equipment

QIBR double-row different-diameter ball slewing bearing 021 series is used for tower cranes, elevators, etc. to ensure the smooth operation and efficient operation of the equipment.