One method to reduce the weight of a sheave is to add lightening holes into the sheave. In some cases, the lightening holes are burnt into the sheave blank prior to machining. In other cases, the lightening holes are machined into the sheave during the machining process. Here is an example of a sheave where…
Bear Equipment manufactures custom snatch blocks to meet your most demanding rigging needs. This snatch block has a precision-machined 30″ diameter steel sheave grooved for 18mm cable and is rated for 3 tons. Fabrication process includes machining side frames and spacer plate in our vertical mill. The sheave is then machined in our large vertical…
Bear Equipment specializes in sheaves for crane applications. Crane sheaves are generally fabricated with lightening holes to reduce weight. Flame Hardening the groove is also typical for crane sheaves to prolong the sheave life. Here is an example of a crane sheave with a 38-1/4″ outer diameter, grooved for 1-1/2″ cable. The fabrication process starts…
Bear Equipment specializes in custom sheaves in all materials, including stainless steel. With superior corrosion resistance, 316SS stainless steel is a great material for sheaves in harsh environments. Production of stainless sheaves is similar to sheaves of other materials, but must be machined at a slightly slower rate than steel to ensure a quality surface…
Bear Equipment manufactures custom track wheels meeting your exact specifications. Bear can precisely machine track wheels up to 36″ in our CNC lathes. Here is a recent track wheel project with a 12″ track diameter: All our track wheels are fabricated from solid blanks, either cut from round bar or burnt from plate. Here is…
To prolong the life of a sheave groove, Bear Equipment flame hardens the groove to a minimum Rockwell 35C. Hardening the groove eliminates premature wear and deformation. Here is an example of what can happen to a sheave groove that is not flame hardened: Our customer sent us this non-Bear Equipment sheave (21.5″ OD, grooved…
A Lightweight Alternative Bear Equipment manufactures sheaves out of a wide range of materials, including aluminum. Aluminum sheaves provide a lightweight and corrosion-resistant option for light-duty applications. The fabrication process starts with cutting aluminum roundbar into sheave blanks. The blanks are then placed in our CNC lathe to be precision machined to the desired profile…
Bear Equipment can be YOUR crane wheel manufacturer. Crane wheels are used on overhead trolleys. Bronze is sometimes used due to its wear and corrosion resistance, along with spark resistance for explosion-proof applications. Bear’s crane wheels are precision machined in our CNC lathes to the exact taper and dimensions required for the application. Crane wheels…
Need a sheave for high load application, corrosive environment, where it is difficult to lubricate the bore option? A sheave with a POM bushing might be the solution. A POM bushing is a self-lubricating multilayer bushing with a unique construction, making it perfect for harsh and hard to maintain environments. Layers of a POM Bushing:…
Bear Equipment manufactures custom snatch blocks to the exact application needs and specifications of our customers. A customer needed to improve on existing snatch blocks that they had been using previously. They sent in the existing blocks to Bear Equipment for our engineering team to evaluate and improve the design. These snatch blocks have a…
