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Knowledge Center

Guides for Specifying Custom Machinery Parts

Ten guides written around what NOWARUN actually produces: gear grades, tool steels, tolerances, ceramics, surface treatment and how to send a drawing that can be quoted without a second round of questions.

Process Guide

How to Specify Gear Precision Using DIN Grades

Specify DIN 3 to DIN 10 gear precision across module 0.5 to 10, matching hobbing, shaping, and grinding processes to your mechanical drive requirements.

Comparison

GLEASON and KLINGELNBERG Bevel Gear Systems Compared

Compare GLEASON and KLINGELNBERG spiral bevel gear systems. Module 0.5 to 10, DIN 3 to DIN 7 precision, custom steels, and specialized heat treatments.

Material Guide

Tool Steel Selection for CNC Punch and Bender Tooling

Compare SKH51, DC53, M2, D2 and 42CrMo for CNC punch and bender tooling heat treated to HRC 50-64. Capacity 1000 pcs per month.

Comparison

Torsional Rubber Springs Compared With Steel Spring Suspension

Compare torsional rubber springs with steel suspension. Covers 50 N to 10000 N ratings, 2-3 Hz natural frequencies, and -40 C to +90 C temperature ranges.

Design Guide

A Machining Tolerance Guide for Custom Metal Parts

Machining tolerance capabilities down to +/-0.005 mm on custom shafts, valve blocks and alloy parts across CNC turning, milling and grinding processes.

Material Guide

Alumina Ceramic Purity Grades and What They Change

Alumina purity from 92% to 99.7% explained: density from 3.0 to 3.96 g/cm3, temperatures to 1800°C, and custom plate sizes from 10 to 850 mm.

Comparison

Metal Injection Molding or Machining for Small Gears

Compare MIM and machining for small gears from module 0.5 to 10. Precision from DIN 5 to DIN 10 with carburizing, grinding and custom alloy options.

Process Guide

A Surface Treatment Guide for Machined Steel Parts

Compare plating, Geomet, Dacromet, and E-coating for machined steel parts holding tolerances down to +/-0.005 mm across varied service conditions.

Buying Guide

How to Send a Drawing That Gets an Accurate Quote

Learn how to prepare drawings for +/-0.005 mm machining, gear systems, heat treatments, and coatings to receive accurate custom component manufacturing quotes.

Product Guide

Worm Gear Drives and When Self Locking Matters

Source custom worm gears from module 0.5 to 10 with precision from DIN 5 to DIN 10 in bronze, brass, and copper to customer drawing specifications.

Still Not Sure Which Specification You Need

Describe the drive, the load and the environment and you will get an engineering answer rather than a brochure.