Start with the assembly designation
Use the complete brake model and the available equipment documentation. NOV’s catalog includes hydraulic caliper disc brakes among its drawworks technologies, alongside other arrangements. A broad description such as “rig brake” therefore does not identify the component. Keep the drawworks reference and the brake assembly reference together, while making clear which one appears on each document.
Organize the parts into separate groups
For purchasing purposes, distinguish friction pads, the disc or rotor, actuator components and hydraulic or control items. Pratt Oil’s hydraulic disc brake parts category includes a PS Series unit, rotor, friction pads and working or safety cylinder listings. These names help organize an inquiry; they do not establish that a component fits every PS model or another manufacturer’s assembly.
Preserve the documented actuation description
Manufacturer terminology can identify an important design difference. Svendborg Brakes distinguishes hydraulic-pressure-applied active calipers from spring-applied, hydraulically released calipers. Use the wording in the installed brake’s own documentation. This example explains why an exact designation matters; it should not be used to assign a particular operating principle to an unidentified PS component.
Prepare a reference for each requested component
For a pad or rotor, attach the original part reference and any existing drawing that defines its geometry and specification. For an actuator or control component, include the component identification and available assembly or circuit reference. State the drawing revision and quantity where known. A photograph can support the description, but it does not replace the specification or demonstrate a cross-model match. When several actuator or control items are listed, keep the position and reference associated with each line throughout the quotation review.
Separate a parts quotation from a system change
Tell the supplier whether you are sourcing an existing replacement item or discussing a complete assembly. Ask the quotation to identify the supplied component and the references used for matching it. Changes to the braking arrangement require a separate engineering review. For an existing-parts inquiry, start with the rotor or friction-pad listing and send the supporting equipment information.
Related Parts and Guides
Manufacturer References
Send Your Parts Inquiry
Send the complete brake model, component name, available part or drawing reference, photographs and quantity. State whether the request is for an existing replacement part or a complete assembly.
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