What should I provide if I want to customize gear and shafts?
- Share
- Issue Time
- May 9,2024
To quote and manufacture custom gears/shafts accurately, please provide either a sample or a detailed drawing, plus the key specs: gear geometry (module/DP, teeth, pressure angle, helix), material & heat treatment, accuracy/inspection needs, and your quantity/lead-time target. If you’re unsure about any parameter, tell us the application and mating parts, and we’ll help fill the gaps.
Option A: You have drawings (fastest)
A complete drawing is the most reliable way to avoid assumptions. At minimum, include datums, critical dimensions, and any functional fits (bearing seats, spline fits, runout). Many gear manufacturing guides emphasize that a successful part starts with clear geometry + material + heat treat + quality requirements.
Option B: You only have a sample (still workable)
If you can send a sample, also share:
• Photos of the mating parts (gearbox layout if possible)
• Any known specs (tooth count, center distance, ratio)
• Failure mode or reason for replacement (wear, noise, broken teeth)
We’ll measure and confirm the tooth data and interfaces before finalizing the quote.
What the quote depends on
Your final cost/lead time and manufacturability mainly depend on:
• Gear accuracy grade & inspection scope (ISO/DIN/AGMA level; profile/lead/pitch/runout checks)
• Material + heat treatment (carburizing/nitriding/Q&T; case depth/hardness targets)
• Process route (hobbing/shaping/skiving vs grinding; whether post-heat grinding is required)
• Order volume & delivery term (trial + batch, FOB/DDP; packaging/document requirements)
The specific information sent to us
1) Gear data (most important)
Please provide as many as you can:
• Tooth count, module/DP, pressure angle, helix angle (if helical), face width
• Bore/shaft interface: keyway/spline, fits, tolerances
• Backlash target or center distance (if known)
(These are common “must-have” tooth data fields in gear machining guidance.)
2) Material & heat treatment
• Material grade (or equivalent)
• Heat treat type (carburize/nitride/induction/Q&T), hardness + case depth targets
3) Quality & documents
• Accuracy grade (ISO 1328 / DIN / AGMA), plus required reports:
• Dimensional report / hardness report / material cert
• Gear profile & lead chart (if required)
4) Commercial info
• Quantity (sample + first batch + annual volume)
• Target lead time and Incoterms (FOB/DDP)
Quick reference table
| What you provide | Example items | Why it matters |
| Drawing or sample | 2D/3D, photos, mating part info | Avoids assumptions |
| Gear tooth data | module/DP, teeth, pressure angle, helix, face width | Determines tooling + process route |
| Material & HT | 20MnCr5/8620 eq., carburize/nitride, hardness/case depth | Drives strength + distortion control |
Accuracy & reports | ISO 1328 grade, profile/lead/pitch/runout report | Controls noise/life; defines inspection workload |
Accuracy & reports | qty plan, lead time, FOB/DDP | Locks scheduling + logistics plan |