LDB is a leading manufacturer of slewing ring bearings since 1999, specializing in the design and production of both standard and non-standard ball bearings, roller bearings, and precision bearings tailored to meet specific customer requirements. Slewing bearings, also known as turntable bearings or rotary bearings, are essential components in heavy machinery such as excavators. LDB provides high-quality slewing bearings for both new and used excavators, ensuring reliable performance and long service life. Our product range includes ball and crossed roller designs, available in sizes from 400 mm to 1900 mm. These bearings are designed for easy selection, with many models available from stock, offering interchangeable solutions that are cost-effective and competitive with market leaders. Ball design bearings are ideal for low-demand applications, offering better static capacity for oscillating movements, improved resistance to structural deformation, and lower friction. On the other hand, crossed roller bearings are engineered for high-performance applications, providing superior dynamic capacity, enhanced stiffness through preloading, and greater resistance to false brinelling and vibrations. The L-shape series is specifically designed for compression applications. It uses high-quality XC 45 improved steel, pre-lubricated with lithium soap grease containing EP additives and a consistency of 2. The bearings are equipped with four evenly spaced grease nipples, and the raceways are hardened for optimal durability. Bolting class 10.9 is recommended for secure installation. LDB offers a comprehensive range of slewing bearings for various excavator brands, including: - **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 - **CAT**: 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 Whether you need a bearing for maintenance or a new machine, LDB ensures quality, reliability, and performance. Our products are designed to meet the highest industry standards and deliver long-term value.

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