# Custom Servo STEP / STL Envelope Request Brief

Use this brief before requesting project-specific STEP, STL, or envelope models. Exact geometry depends on the buyer's motor, drive, actuator, reducer, cable, and housing scope, so the engineering team needs these inputs before preparing a useful model package.

## 1. Servo Scope

- Motor only
- Servo drive PCBA only
- Smart servo
- Integrated actuator
- Full robot joint module

## 2. Required Envelope Inputs

- Maximum outer diameter
- Maximum axial length
- Shaft diameter or hollow bore
- Output flange or spline pattern
- Mounting hole pattern and datum
- Bearing support concept
- Cable exit direction
- Connector type and clearance volume
- Heat path or mounting surface
- Sealing or IP target

## 3. Motion and Load Inputs

- Continuous torque or axial force
- Peak torque or peak force and duration
- Target speed or stroke speed
- Duty cycle and hold time
- Shock load or side-load condition
- Backlash or repeatability target

## 4. Electrical and Control Inputs

- Bus voltage range
- Continuous and peak current limit
- Encoder or feedback interface
- Protocol requirement
- Brake, limit switch, or safety input
- Firmware ownership and commissioning notes

## 5. Output Requested

- STEP envelope only
- STEP assembly reference
- STL clearance model
- 2D interface drawing
- PCB keep-out outline
- Cable routing volume

## 6. Files to Attach

- Existing robot link or mechanism STEP
- 2D drawing with critical dimensions
- Reference actuator or motor datasheet
- Target BOM or selected reducer
- Acceptance test plan

Send the completed brief and files to inquiry@customrobotservo.com for review.