NTN 1217S self-aligning ball bearing
- Brand
- NTN
- Category
- Bearings
- Subcategory
- Self-aligning ball bearings
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
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How to read NTN 1217S
- 12Series
- Self-aligning ball bearings, 12 series. For the same bore, each series has a different outside diameter and width.
- 17Bore
- 85 mm bore: 17 × 5.
- SSuffix
- NTN suffix: it defines the variant (sealing, cage, internal clearance or other features).
1217 is the standard (ISO) basic designation: it defines the type, the series and the bore.
Description
The NTN 1217S bearing has a 85 mm bore, a 150 mm outside diameter and a 28 mm width (85 x 150 x 28 mm).
NTN 1217S is a reference of self-aligning ball bearing, within Bearings. Request a quote for 1217S via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
The NTN S series self-aligning ball bearing is a radial bearing with two rows of balls and a spherical raceway in the outer ring, which allows it to self-align and compensate for angular misalignment between shaft and housing. It is used in applications where shaft deflection or mounting errors are unavoidable. MR Accesorios Industriales sells these products in sizes from 10 mm bore diameter. Request a quote for your part number on WhatsApp.
The S series designation is read with the basic number followed by the letter S. For example, 1200S indicates a self-aligning bearing of the 1200 series with the S suffix, which in practice identifies the version with a steel sheet cage. The examples 1201S, 1202S, 1203S, 1204S, 1205S, 1206S and 1207S show how the size varies within the same series: the final number increases with the bore diameter. To request a quote, send us the complete part number exactly as it appears on your equipment.
These bearings are used in equipment where the shaft may deflect or where alignment between supports is not perfect. In Argentine industry they appear in belt conveyors, vibrating screens, textile machines, fans, centrifugal pumps and power transmission equipment in general. They are also chosen for mounting on long shafts, where thermal expansion or combined loads require the bearing to accommodate small angular movements without losing load capacity.
To correctly select a self-aligning bearing, take into account the radial and axial load it will support, the rotation speed and the type of lubrication. The S series accepts grease or oil lubrication; in dusty or humid environments, additional seals or protective covers should be evaluated. Mounting must be done with suitable tools, avoiding direct blows on the balls. Initial alignment is less critical than with rigid bearings, but it is always advisable to check internal clearance after mounting.
Regarding equivalents, self-aligning ball bearings are interchangeable between manufacturers while keeping the basic number and the suffix that indicates the design. An NTN 1205S can be replaced by an equivalent bearing from another brand that respects the same dimensions and tolerances. It is always advisable to verify the complete part number and operating conditions before replacing. If you have doubts, send us the original part number and we will indicate the compatible alternative.
MR Accesorios Industriales sells NTN bearings. If you need a quote for the S series, write to us on WhatsApp with the exact part number and quantity. We will reply shortly with availability and shipping options. We can also advise you on mounting and the right lubrication for your application.
Dimensions
Boundary dimensions of the basic designation 1217 per ISO 15: 85 x 150 x 28 mm (d x D x B).
- Bore
- 85 mm
- Outside diameter (D)
- 150mm
- Width (B)
- 28mm
Same size in SKF and other brands
Pages from other brands with the basic designation 1217: 85 x 150 x 28 mm (d x D x B) per ISO 15.
They share the boundary dimensions set by ISO 15, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.
Frequently Asked Questions
- What are the dimensions of the NTN 1217S bearing?
- The NTN 1217S bearing has a 85 mm bore, a 150 mm outside diameter and a 28 mm width (85 x 150 x 28 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 1217.
- What does the S suffix mean in NTN bearings?
- The S suffix indicates a design variant within the series, normally associated with the cage type. In the 1200 series, for example, the part number
1205Scorresponds to a self-aligning bearing with a sheet metal cage. Always verify the complete part number on the equipment plate or in the manual. - Where are self-aligning ball bearings used?
- They are used in equipment where the shaft may become misaligned, such as conveyors, screens, fans and pumps. Their self-aligning capability reduces wear and extends service life in assemblies with deflection or thermal expansion. In Argentina they are common in the food and mining industries.
- How do I request a quote for an NTN self-aligning bearing?
- Write to us on WhatsApp with the complete bearing part number, for example
1206S, and the quantity you need. We will quote you shortly. If you cannot find the part number, send us a photo of the part and the shaft and housing dimensions so we can identify it.