Import End Carriage Wheel Kits — Buy in Bulk from Supplier in China

End carriage wheel kits from Nanjing Ram Machinery Co., Ltd are assemblies used in overhead crane systems, comprising geared wheels, plain wheels, shafts, bearings, spacers, and keepers. The kits are designed for use with ASCE rail and square bars, with wheel diameters ranging from 150mm to 545mm. The H.S. code is 8431499900, and each kit is packaged on pallets for bulk shipment. These components are critical for end truck assemblies in industrial cranes, where motion stability and load distribution are essential.

Geared wheels are forged and heat treated to a hardness of up to 40 Rc, with optional deep hardening for heavy-duty applications. Plain wheels do not rotate with the bearing, which remains stationary under load. The bearing selection differs between geared and plain wheels due to rotational stress patterns. Spacers are supplied in standard configurations: three short and one long spacer per end truck, with the long spacer compensating for dimensional differences between geared and non-geared wheel positions. Maximum wheel load is 1.25 times the rated load, so a GW180PW180 rated at 3200kg can handle up to 4000kg under peak conditions.

These kits are commonly purchased by steel plants, rolling mills, cement factories, and chemical processing facilities that operate overhead cranes. Buyers typically require certified material reports for forged steel and dimensional tolerances for wheel flanges. Packaging is standard on wooden pallets with protective film. Trade terms are typically FOB Ningbo or CIF port of destination. Buyers should confirm wheel material grade, hardness certification, and spacer configuration before ordering.

Nanjing Ram Machinery Co., Ltd is a manufacturer of crane components based in Zhejiang Province, China, with a registered address in Ningbo. The company specializes in end carriage wheel kits and related crane hardware, with production focused on forged steel components for industrial lifting systems. The supplier's trust tier is harbor, indicating verified business registration and physical address, but response metrics are not active on the platform. No claims are made regarding years in operation, export volume, or client list.

The listing does not state certifications, production capacity, or workforce size. The company does not appear to offer third-party quality audits or ISO documentation in this listing. Buyers should treat this supplier as a direct manufacturer of mechanical assemblies with no stated export experience beyond this product line. All technical claims derive from the product description and are not supported by external verification signals.