Why India: Deep ecosystems for bearing rings, cages and housings plus the world’s largest brass precision-turned parts cluster in Jamnagar (7,000+ MSMEs) for high-volume, cost-efficient components. India exported US$783 million of HS 8482 ball/roller bearings in 2023, with strong lanes to the US/EU.

What we source & build

• Rolling bearings & sub-components: deep-groove, angular contact, spherical/tapered roller; rings/cages; bearing housings; plain bushes.
  
• Power-transmission parts: gears/shafts, sprockets, roller chains (ISO 606), pulleys and V-belts (ISO 4184); couplings.
  
• Precision-turned parts: bushings, inserts, pneumatic/hydraulic fittings, cable glands, spacers and fasteners—steel, stainless, brass (Jamnagar), aluminium.
  

The standards buyers expect

Bearings (design, tolerances & life)

• ISO 492 (radial bearings tolerances), ISO 199:2023 (thrust bearings tolerances), ISO 5753-1 (radial internal clearance).
  
• ISO 281 (dynamic load rating & life), ISO 76 (static load rating).
  
• Noise/vibration: ISO 15242 series (measuring methods for bearing vibration).
  
• Damage analysis (RCAs): ISO 15243 failure classification.
  

Power transmission

• ISO 606 (short-pitch precision roller/bush chains + sprockets).
  
• Gears: ISO 6336 (load capacity calc), ISO 1328-1 (gear accuracy classes).
  
• Belts/pulleys: ISO 4184 (classical & narrow V-belts—length/tolerances).
  

Machining & drawing conventions for turned parts

• ISO 2768-1/-2 (general tolerances) • Surface texture per ISO 21920-1:2021 (replaces ISO 1302).
  

Quality & test plan (what your QA team sees)

• Dimensional & run-out: tolerance class to ISO 492/199, GR&R; CMM run-out and roundness.
  
• Clearance & preload: verify to ISO 5753-1 (C2/C3/C4) with traceable methods.
  
• Material & heat-treat: chemistry & hardness with EN 10204 3.1 MTCs; case/core charts.
  
• NVH: bearing vibration tests per ISO 15242 (defined bands & acceptance criteria).
  
• Chains/gears/belts: chain pitch/ultimate strength (ISO 606), gear contact/bending per ISO 6336, belt datum length/tolerance per ISO 4184.
  

How IndiaUnbox de-risks your buy

1. Spec → cost-down: convert bearing variants (seal/shield/clearance) to application; gear macro-geometry per ISO 6336; chain/belt selection for duty; machining datums & tol. stack-ups per ISO 2768.
   
2. Right factories, right clusters: bearing lines (rings, grinding, super-finish) and Jamnagar for high-volume brass turning; audit maps list heat-treat, grinding, honing, plating.
   
3. Samples → FAI/PPAP: control plan, MSA/GR&R, capability on CTQs (ID/OD/run-out), life calculations to ISO 281; NVH to ISO 15242.
   
4. Lot-wise compliance pack: drawings & revs, inspection reports, EN 10204 3.1 MTCs, heat-treat charts, packing photos and corrosion-protection SOPs.

Example scope

• Bearings: DGBB 6000/6200/6300 series; spherical/tapered; housings (P/Q series); custom rings/cages.
  
• Power-transmission: spur/helical gears (accuracy per ISO 1328); shafts & keyways; ISO 606 chains+sprockets; V-belt drives per ISO 4184.
  
• Turned parts: brass/stainless/steel bushings, inserts, nozzles, pneumatic fittings, precision spacers (Jamnagar cluster).
  

Suggested stat badges for the page

• HS 8482 bearings exports (India, 2023): US$ 783 M.
  
• Jamnagar cluster: 7,000+ brass/turned-parts MSMEs (“Brass Capital of the World”).
  
• Key standards in play: ISO 492 / 199 / 5753-1 / 281 / 76 / 15242 • ISO 606 / 6336 / 1328 / 4184 • ISO 2768 / ISO 21920-1
  

Bottom line: IndiaUnbox turns India’s bearing, power-transmission and turned-parts depth into spec-tight, test-backed deliveries—ISO-compliant documentation, clean NVH/clearance results, and cost structures you can defend.