# Mechanical

Manufacturing reference articles in Mechanical.

[Manufacturing Wiki](https://planar.so/wiki/index.md)

- [Angular-contact bearings](https://planar.so/wiki/components/mechanical/angular-contact-bearings.md): Directional load paths, paired arrangements, clearance and preload, with bounded NSK catalogue examples and rating definitions.
- [Ball screws](https://planar.so/wiki/components/mechanical/ball-screws.md): Recirculating-ball motion conversion, lead, preload, load ratings and the limits of catalog accuracy and stiffness.
- [Compression springs](https://planar.so/wiki/components/mechanical/compression-springs.md): Helical compression-spring geometry, force and rate, end contact, and the limits of a bounded catalog example.
- [Deep-groove ball bearings](https://planar.so/wiki/components/mechanical/deep-groove-ball-bearings.md): Construction, load paths, installed clearance, rating-life meaning, and a bounded NTN 6205 catalog example.
- [Extension springs](https://planar.so/wiki/components/mechanical/extension-springs.md): Extension-spring initial tension, length datums, body and hook stresses, and a bounded catalog force calculation.
- [Helical gears](https://planar.so/wiki/components/mechanical/helical-gears.md): Normal and transverse tooth geometry, mesh forces, backlash, lubrication, and a bounded KHK ground-gear example.
- [Lead screws](https://planar.so/wiki/components/mechanical/lead-screws.md): Sliding screw-and-nut drives, lead and thread geometry, friction, load paths, wear, and application-dependent stability limits.
- [Linear guide rails](https://planar.so/wiki/components/mechanical/linear-guide-rails.md): Recirculating rail-and-block guidance, directional loads, rating-distance conventions, preload and mounting accuracy, with a bounded THK SRG35R example.
- [Needle-roller bearings](https://planar.so/wiki/components/mechanical/needle-roller-bearings.md): Needle roller load paths, raceway construction, installation geometry, and conditional ratings illustrated by NTN HK2016F.
- [O-rings](https://planar.so/wiki/components/mechanical/o-rings.md): Elastomer sealing, compound identity, gland geometry and failure limits, illustrated by Parker 2-214 in N0674-70.
- [Plain bushings](https://planar.so/wiki/components/mechanical/plain-bushings.md): Sliding-bearing construction, projected pressure and p-v, counterface and clearance effects, with a bounded catalog example.
- [Radial shaft seals](https://planar.so/wiki/components/mechanical/radial-shaft-seals.md): Radial lip seal construction, lubricant retention, shaft and housing interfaces, and bounded SKF dimensional examples.
- [Shaft couplings](https://planar.so/wiki/components/mechanical/shaft-couplings.md): Rigid and flexible shaft connections, torsional behavior, misalignment, hub interfaces, and a bounded ROTEX GS sizing example.
- [Spur gears](https://planar.so/wiki/components/mechanical/spur-gears.md): Involute tooth geometry, mesh compatibility, backlash, load paths and service limits, with a bounded module-2 example.
- [Tapered-roller bearings](https://planar.so/wiki/components/mechanical/tapered-roller-bearings.md): Cone and cup construction, opposed bearing arrangements, endplay and preload, mounting and lubrication, and the limits of fatigue-life calculations.
- [Timing belts](https://planar.so/wiki/components/mechanical/timing-belts.md): Synchronous belt geometry, profile compatibility, reinforcement, tension measurement, drive sizing, installation, and failure diagnosis.
- [Torsion springs](https://planar.so/wiki/components/mechanical/torsion-springs.md): Helical torsion-spring load paths, angular datums, bending stress, clearance effects, and a bounded Lee Spring example.
- [V-belts](https://planar.so/wiki/components/mechanical/v-belts.md): Belt profiles, length conventions, drive sizing, tension and replacement limits for friction-driven V-belt systems.
- [Worm gears](https://planar.so/wiki/components/mechanical/worm-gears.md): Worm and wheel geometry, mating constraints, thrust and efficiency, backdrivability, lubrication, assembly, and bounded ratio and heat-loss calculations.