How to Prepare a Robotic Linkage Drawing for an RFQ

Define the assembly you want quoted

State whether the enquiry covers a catalogue linkage, a connecting rod without end joints, individual end components or a complete assembled item. Mark supplied-by-customer parts separately. Give the drawing reference and revision, and identify which dimensions are fixed.

Use End A and End B consistently across the drawing, parts list and enquiry. If the ends differ, show both instead of assuming one view defines the other.

Record the end interfaces and centre distance

• End A / End B: pin or bore dimensions, thread callout, male or female connection, thread hand and mating component.
• Assembly geometry: joint-centre distance, reference position, adjustment range and the required installation envelope.
• Locking and assembly: locking method, specified fasteners, supplied parts and any assembly sequence restrictions.
• Movement: operating range, tilt or misalignment space, surrounding clearances and potential interference.

Rod ends can have different thread configurations. Identify size, pitch and hand rather than copying only the bearing bore into the thread field. Use the applicable drawing for the exact item.

Explain what the linkage must do

Name the robotic joint or connection and describe its motion. Provide normal and peak loads with directions and units, including reversals or shocks where relevant. Add operating temperature, exposure and maintenance constraints.

If play, starting torque or a durability target matters, include the test conditions and acceptance requirement. Mark values that are estimates or not yet defined. A measured prototype dimension should remain identifiable as a sample measurement, separate from the approved drawing requirement.

Copy this assembly RFQ checklist

Project / robotic joint location:
Drawing number and current revision:
Supply scope: catalogue item / component / complete assembly:
End A interface, dimensions and thread details:
End B interface, dimensions and thread details:
Centre distance, reference position and adjustment:
Fixed dimensions and available movement space:
Normal / peak loads, directions and units:
Movement range, frequency and duty:
Environment and maintenance constraints:
Play / starting-torque targets and test conditions:
Inspection points and documents required:
Prototype quantity / later production estimate:
Delivery destination and preferred timing:
Open questions or undefined requirements:

Send a readable reference, then agree the review scope

Use a readable PDF or image preview showing dimensions, notes and revision. Discuss confidentiality before sending restricted or third-party drawings. For native CAD or large files, agree a transfer method and required file format.

The website form does not accept attachments. Select “I need a custom part or assembly” in the enquiry form, then email supporting files to [email protected] using the same project reference. No complete set of engineering values is required to make first contact.

Common questions