TIMKEN 3308 A angular contact ball bearing
- Brand
- TIMKEN
- Category
- Bearings
- Subcategory
- Angular contact ball bearings
- Series
- 3200 - 3300
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Decoding TIMKEN 3308 A
- 33Series
- Angular contact ball bearings, 33 series. Series differ in outside diameter and width even when the bore is the same.
- 08Bore
- Bore 40 mm (08 × 5).
- ASuffix
- TIMKEN suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
3308 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
TIMKEN 3308 A measures 40 mm across the bore and 90 mm across the outside diameter; its width is 36.5 mm (40 x 90 x 36.5 mm).
TIMKEN 3308 A belongs to angular contact ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 3308 A and any equivalents.
Angular contact ball bearings in the TIMKEN 3200-3300 series handle radial and axial loads acting together in one direction. Because of their contact angle, they suit equipment where precision and rigidity matter, such as pump shafts, gearbox internals and machine tool spindles. MR Industrial Accessories supplies this line to maintenance and purchasing teams across the United States and Latin America.
Reading the code is straightforward once you know the pattern. The four-digit basic number sets the size, and the letter A that follows marks a construction variant inside the family. Small sizes include 3201 A, 3202 A and 3203 A, while 3207 A and 3208 A sit at the upper end. Depending on the manufacturer's standard, that A can point to a different contact angle or a different cage. When you pick a code, match it against your housing dimensions and the direction the load travels.
Typical users are metalworking, food processing and petrochemical operations. You will find these bearings in centrifugal pumps, compressors, high-speed fans and milling spindles. Maintenance crews rely on them in machine tools and on production lines where precision is part of the job. Since they take axial load in a single direction, they fit setups with steady thrust, such as helical gears or worm screws.
Selection comes down to load size and direction, running speed and the conditions around the bearing. Alignment between shaft and housing has to be precise at mounting, because these bearings do not tolerate misalignment well. Grease or oil both work for lubrication, depending on speed and operating temperature. How you seal them depends on contamination outside: dirty settings call for extra protection. Internal clearance is set through preload or axial clearance, following the equipment design.
On interchangeability, TIMKEN 3200-3300 series bearings can be replaced by products from other makers that use the same dimensional and angle nomenclature. Check tolerances and contact angle carefully, because small differences change how the bearing performs. Load capacities are not identical across every brand, so compare specifications before you commit. Our team can review the equivalent with you.
Send the code or the dimensions you need by WhatsApp or email and we will prepare your quote. If a direct match is not the best route, we will point you to a compatible alternative. We can also help with mounting questions and with choosing the right lubrication for the application.
Dimensions
40 x 90 x 36.5 mm (d x D x B): boundary dimensions for basic designation 3308, according to ISO 15.
- Bore
- 40 mm
- Outside diameter (D)
- 90mm
- Width (B)
- 36.5mm
Same size, other brands
Other brands' pages with basic designation 3308: 40 x 90 x 36.5 mm (d x D x B) per ISO 15.
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- TIMKEN 3308 A bearing: what are its dimensions?
- TIMKEN 3308 A measures 40 mm across the bore and 90 mm across the outside diameter; its width is 36.5 mm (40 x 90 x 36.5 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 3308.
- What does the A suffix indicate on TIMKEN 3200 series bearings?
- It marks a construction variant within the series, which may relate to a particular contact angle or cage type. Ask our team to confirm the exact characteristic when you request your quote.
- How do I decide between a 3205 A and a 3206 A bearing?
- It depends on your shaft and housing dimensions plus the loads and speeds involved. Send those details by WhatsApp or email and we will help you land on the right code.
- Can TIMKEN 3200 series bearings be replaced with another brand?
- Yes, when the other brand shares the same dimensional designation and contact angle. Verify tolerances and load capacities first; we can advise you on the equivalent.