Raw material
Our excavator slewing bearings are made of high quality bar steel of 50Mn or 42CrMo which forged into bearing rings strictly accordance with the national standards of forging.

Raceway hardening
The bearing groove is quenched by the advanced automatic tracking induction quenching equipment, which can accurately control the quenching hardness and hardening depth of the groove, and ensure the slewing bearings are firm and durable.

Gear hardening
The single tooth quenching is adopted to ensure that the tooth surface and groove reach the standard quenching hardness and the inside of the tooth is soft, which guarantees the high wear resistance and impact resistance of the teeth, greatly improves the life of the teeth and reduces the risk of broken teeth.

Available models	The machine models below are just for your reference, for more details, kindly contact us directly!
	Komatsu: PC30 PC40 PC60 PC70 PC75 PC90 PC100 PC120 PC128UU PC130 PC150 PC200 PC220 PC228 PC300 PC400 PC450
	Caterpillar: CAT305.5 E120B E180 E200B CAT215 CAT225 CAT312 CAT320 CAT325 CAT330 CAT336 CAT345 CAT374 CAT380 CAT390
	Hitachi: EX60 EX90 EX100 EX120 ZX120 ZX160 EX200 EX210 ZX200 ZX225 EX220 ZX230 ZX240 ZX270 EX300 ZX330 EX400 EX450 ZX480
	Kobelco: SK03 SK07 SK09 SK60 SK90 SK120 SK200 SK230 SK300 SK350
	Doosan/Deawoo: DH55 DH60 DH120 DH200 DH220 DH225 DX225 DH258 DH280 DH290 DH300 DH320 DH330 DH336 DH500
	Sumitomo: SH60 SH120 SH200 SH225 SH260 SH265 SH280 SH300 SH340 SH350 SH430 SH580
	Hyundai: R55 R60 R80 R130 R140 R150 R170 R200 R210 R215 R220 R225 R245 R260 R280 R290 R300 R305 R320 R335 R360 R450 R500
	Kato: HD250 HD307 HD400 HD450 HD512 HD100 HD700 HD770 HD800 HD820 HD900 HD1250
	Volov: EC55 EC210 EC290

Packing Details: Plywood pallet/Case Size: L(1.2m)*W(1.2m)*H(0.8m) Weight: Less than 1.5 tons Mark: YSQ Original: Made in china