32218 Tapered Roller Bearing: Sizes, P6 Variant & Ordering

Selecting a replacement 32218 tapered roller bearing requires matching exact metric dimensions and verifying whether your equipment needs a standard or high-precision tolerance class. The 32218 tapered roller bearing features a 90 mm bore, 160 mm outside diameter, and 42.5 mm overall width. Within the 32200 series tapered roller bearing family, closely related sizes include the 32217 (85x150x38.5 mm) and the 32216 (80x140x35.25 mm).

In industrial machinery, gearboxes, and heavy vehicle axles across Pakistan, specifying only the primary part number is often insufficient. Choosing between standard tolerance variants and precision class options like the 32218 P6 bearing, as well as selecting between HI-TEC standard and HI-TEC SILVER tiers, directly affects equipment alignment, rotational accuracy, and operating lifespan.

What are the exact dimensions and P6 variants for 32218, 32217, and 32216 bearings?

The 32218 tapered roller bearing has a 90 mm bore, 160 mm outside diameter, and 42.5 mm width. Knowing exact tapered roller bearing sizes Pakistan industrial machinery uses prevents costly installation delays. The 32200 series uses standardized boundary dimensions, but shaft steps and housing seats differ significantly between sequential part numbers.

For equipment requiring enhanced dimensional accuracy, the P6 suffix designates an ISO 492 precision class^[1]. Under ISO 492 standards, a P6 precision rating imposes tighter manufacturing limits on dimensional tolerances and running accuracy compared to normal tolerance classes^[1][2]. Selecting a 32218 P6 bearing or a 32217 P6 variant reduces radial and axial runout in high-precision gearboxes, heavy-duty drive shafts, and machine tool spindles.

When sourcing components, maintenance engineers can choose between standard HI-TEC units for cost-effective reliability and HI-TEC SILVER line units for demanding heavy-duty service. Check specific product specifications directly on the 32218 bearing page or evaluate the 32217 bearing details to match shaft requirements. Nearby sizes in adjacent series include the 32018 bearing for narrower housing profiles and the larger 32219 bearing for heavier duty applications.

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What must you check before ordering a 32200 series bearing in Pakistan?

Before ordering a 32200 series tapered roller bearing, you must verify precision tolerances, application duty requirements, and housing dimensional fit rather than relying solely on the base series number. Assuming any bearing sharing a base designation is directly interchangeable causes premature machinery failure, housing fretting, and unnecessary downtime.

To ensure correct fitment and long-term service life, maintenance buyers should evaluate three crucial verification steps:

• Precision class tolerance: Check whether your assembly specifies a standard tolerance or a P6 high-precision variant. Installing a standard bearing into a housing engineered for a 32218 P6 bearing leads to excessive vibration and misalignment.
• Brand tier and duty cycle: Heavy industrial gearboxes benefit from the extended service capacity of HI-TEC SILVER, whereas general industrial equipment operates effectively with standard HI-TEC bearings.
• Adjacent size boundary dimensions: Verify shaft bore diameter exactly. Replacing a 32217 requires an 85 mm bore, whereas the 32216 bearing size is 80 mm. If shaft or housing seats differ, inspect related components like the 30217 bearing or the smaller 32215 bearing before finalizing procurement.

Matching a series number alone does not guarantee fitment, as precision class P6 and brand tiers vary across applications. Equipment technicians and procurement managers across Pakistan can verify exact part specifications, availability, and pricing directly via WhatsApp at +92-348-5563390 through HI-TEC Pakistan. Direct communication ensures your workshop receives the exact 32218, 32217, or 32216 designation required for your application.

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Frequently Asked Questions

What are the exact dimensions of 32218, 32217, and 32216 bearings?

The 32218 tapered roller bearing measures 90 mm bore, 160 mm outside diameter, and 42.5 mm width. The 32217 32217 bearing dimensions are 85x150x38.5 mm, and the 32216 bearing size measures 80x140x35.25 mm.

What does the P6 variant mean on a 32218 or 32217 tapered roller bearing?

The P6 suffix indicates a high-precision tolerance variant manufactured to ISO 492 Class 6 limits. It delivers tighter dimensional tolerances and lower running error than standard tolerance bearings.

Are all 32200 series tapered roller bearings interchangeable?

No, 32200 series bearings are not interchangeable across different part numbers or tolerance classes. Each part number designates distinct bore and outer dimensions, while P6 variants provide tighter tolerances than standard units.

How do I order HI-TEC 32218 or 32217 bearings in Pakistan?

You can confirm exact part specifications, availability, and request pricing directly via WhatsApp at +92-348-5563390 with HI-TEC Bearings in Karachi.

References

1. ISO 492:2023. https://www.iso.org/standard/80376.html (2023-08-16)
2. ISO 492:2014. https://www.iso.org/standard/60356.html (2023-08-16)