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**Model NO.:** RKS. 21 1091
**HS Code:** 8482109000
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### 1. Introduction to LDB Excavator Slewing Bearings
LDB has been a leading manufacturer of slewing ring bearings since 1999, specializing in high-quality and reliable products tailored to various industrial needs. In addition to standard slewing bearings, we also design and produce custom ball bearings, roller bearings, and precision bearings according to specific technical requirements.
Slewing bearings are also known as slewing rings, turntable bearings, or rotary bearings. Among these, excavator slewing bearings are specifically designed for use in excavators. These components play a critical role in the performance and durability of the machines. Whether you're looking for replacement parts for used excavators or original equipment for new models, we provide high-quality slewing bearings that meet international standards.
Our product range includes both ball and crossed roller designs, available in sizes from 400 mm to 1900 mm. These bearings are ideal for a wide range of applications due to their ease of selection, availability from stock, interchangeability, and cost-effective performance.
They are designed to compete with market leaders and serve as a reference for new product development.
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### Ball Design
Ball design is suitable for low-demand applications where simplicity and reliability are key. It offers:
- Better static capacity for oscillating movements
- Improved resistance to structural deformation (clearance)
- Lower friction rate for smoother operation
This design is ideal for applications where cost-effectiveness and ease of maintenance are priorities.
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### Crossed Roller Design
For more demanding applications, the crossed roller design is recommended. It provides:
- Enhanced dynamic capacity and longer service life
- Greater stiffness due to preloading
- Superior resistance to false brinelling and vibrations
This design is particularly beneficial in heavy-duty environments where precision and stability are essential.
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### L-Shape Range
The L-shape bearing is specifically designed for compression applications. Key features include:
- **Material:** High-quality XC 45 improved steel
- **Lubrication:** Pre-lubricated with lithium soap, EP additives, and a consistency of 2
- **Bolting Class:** Recommended 10.9 grade bolts
- **Grease Nipples:** Four evenly spaced grease nipples for easy maintenance
- **Raceway Hardening:** High-quality raceways with superior hardness
These bearings are ideal for applications requiring high load capacity and long-term reliability.
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### Excavator Slewing Bearings by Brand
LDB supplies slewing bearings for a wide range of excavator brands. Below is a list of commonly supported models:
| **Excavator Brand** | **Model No.** |
|---------------------|---------------|
| KOMATSU | PC30 |
| | PC40 |
| | PC60-6 (Z=76) |
| | PC60-6 (Z=80) |
| | PC60-7 (Z=76) |
| | PC70-7 |
| | PC75U |
| | PC90 |
| | PC90-6 |
| | PC100-5 |
| | PC120-5 |
| | PC120-6 (4D95)|
| | PC120-6 (4D102)|
| | PC130-7 |
| | PC128UU |
| | PC150-5 |
| | PC20HT |
| | PC200-1 |
| | PC200-2 |
| | PC200-3 |
| | PC220-3 |
| | PC220-5 |
| | PC200-6 (S6D95)|
| | PC200-6P (S6D102)|
| | PC200-7 (Z=92)|
| | PC220-7 |
| | PC228UU |
| | PC300-2 |
| | PC300-3 |
| | PC300-5 |
| | PC300-6 |
| | PC300-7 |
| | PC350-6 |
| | PC360-7 |
| | PC400-3 |
| | PC400-5 |
| | PC400-6 |
| | PC450 |
| KATO | HD450-7 |
| | HD512 |
| | HD100 |
| | HD700-1 |
| | HD700-2 |
| | HD700-5 |
| | HD700-7 |
| | HD770SE |
| | HD770-1 |
| | HD770-2 |
| | HD800-7 |
| | HD820-1 |
| | HD900-7 |
| | HD1250-5 |
| | HD250-5 |
| | HD250-7 |
| | HD307 |
| | HD516 |
| | HD400-7 |
| | HD450-5 |
| CATPERPILLAR | CAT305.5 |
| | E120B |
| | E180 |
| | E200B |
| | CAT215 |
| | CAT215B |
| | CAT225 |
| | CAT312-1 |
| | CAT320B |
| | CAT323 |
| | CAT320C |
| | CAT324 |
| | CAT325 |
| | CAT325C |
| | CAT330C |
| HITACHI | EX60-1 |
| | EX60-2 |
| | EX60-3 |
| | EX60-5 |
| | EX90 |
| | EX100-1 |
| | EX100-3 |
| | EX100-5 |
| | EX120-1 |
| | EX120-2 |
| | EX200-3 |
| | EX200-5 |
| | EX210-5 |
| | ZX120 |
| | ZX160 |
| | EX200-1 |
| | EX200-2 |
| | EX200-3 |
| | EX200-5 |
| | EX210-5 |
| | ZX200 |
| | ZX200-3 |
| | ZX225 |
| | EX220-5 |
| | ZX230 |
| | ZX240 |
| | ZX270 |
| | EX300-1 |
| | EX300-2 |
| | EX300-3 |
| | EX300-5 |
| | ZX330 |
| | EX450 |
| | ZX480 |
| DOOSAN | DH55-5 |
| | DH60-7 |
| | DH150-7 |
| | DH200-3 |
| | DH220-3 |
| | DH102 |
| | DH225-7 |
| | DH258-7 |
| | DH280 |
| | DH290 |
| | DH300-5 |
| | DH320 |
| | DH330-3 |
| | DH360-5 |
| | DH500 |
| KOBELCO | SK03 |
| | SK09 |
| | SK907B |
| | SK100 |
| | SK120-5 |
| | SK200-1 |
| | SK200-2 |
| | SK200-5 |
| | SK200-6 |
| | SK200-8 |
| | SK230-6 |
| | SK300 |
| | SK350-8 |
| SUMITOMO | SH120A2 |
| | SH120A3 |
| | SH200A1 |
| | SH200A2 |
| | SH200A3 |
| | SH200G3 |
| | SH200C3 |
| | SH210A3 |
| | SH220A1 |
| | SH225 |
| | SH260 |
| | SH265 |
| | SH280 |
| | SH300/A2 |
| | SH340 |
| | SH350 |
| | SH430 |
| | SH40T |
| | SH580 |
| HYUNDAI | R60-5 |
| | R60-7 |
| | R80-7 |
| | R130-5 |
| | R130-7 |
| | R140 |
| | R150W |
| | R170 |
| | R200 |
| | R210-3 |
| | R220-5 |
| | R210-9 |
| | R215-7 |
| | R225-7 |
| | R245 |
| | R260-5 |
| | R280 |
| | R290 |
| | R300 |
| | R305-7 |
| | R320 |
| | R335-7 |
| | R360 |
| | R450 |
| VOLVO | EC55 |
| | EC210 |
| | EC240 |
| | EC290 |
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Whether you need standard or custom slewing bearings, LDB ensures quality, performance, and long-term value for your excavator systems. Contact us today for a personalized solution.