Guides for Gear Buyers and Engineers
Short, practical guides on the questions that come up before a gear is ordered: what the part is, how accurate it has to be, what it should be made of, how it is cut and what drives the price.

- 5guides
- DIN · ISOstandards explained
- No drawing?start with guide 1
- 24 hfirst answer to an RFQ
What Do You Need to Know Before Ordering a Gear?
Each guide takes a few minutes to read and ends with a checklist or a table you can use on your own drawing.

How to measure a gear and find its module
Tooth count, tip diameter and one formula: identify a spur or helical gear before you order a new one.
Read the guide →
Gear accuracy grades: DIN 3962 and ISO 1328
What the quality grades mean, what hobbing and grinding reach, and which grade to put on the drawing.
Read the guide →
Gear materials and heat treatment
Case hardening, induction hardening, nitriding or quench and temper, with typical steels and hardness values.
Read the guide →
Gear hobbing, shaping or grinding
Which process cuts which gear, and how the process shapes your design and the price.
Read the guide →
What does a custom gear cost?
The eight price drivers, how to compare quotations and a checklist for a gear RFQ.
Read the guide →
Not covered here?
Send the drawing or describe the drive. We answer technical questions before we quote.
Contact us →Who Are These Guides For?
They are written for buyers, design engineers and maintenance teams in Europe who order custom gears, not catalogue parts. Buyers find what belongs in an enquiry and how to compare quotations. Engineers find the standards, materials and process limits that decide whether a design is easy or expensive to make. Maintenance teams find out how to identify a worn gear when the drawing is gone.
Nika Gears produces spur, helical, bevel, planetary and internal gears, gear racks, pinion shafts and splined shafts to customer drawings in İzmir, Türkiye. The guides describe how we look at a drawing before we quote it.
Have a question we did not cover?
Send the drawing, or photos and a few dimensions. We reply with an answer, questions or a quotation.