N217 bearing: complete specifications & equivalents

Specification table

Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01

Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the N217 model number is decoded

N217 is the standard section of the NTN N200 dimension series for a 85 mm shaft — 134 kN of basic dynamic capacity in a 1830 g, open bearing. On the NTN nameplate N states which ring carries the ribs, which determines whether N217 floats or locates; the numeric remainder is the ISO 15 series and 85 mm bore reference, not a fit or clearance instruction. The 32.5 mm radial section ((150−85)/2) frames the roller complement; capacity per millimetre of bore is about 1.6 kN/mm before application factors. Rating life at 134 kN C assumes clean oil and adequate film; the 16.3 kN Pu floor means contamination derating — not the C rating alone — governs adjusted life in dusty gearboxes. Provide axial location with an adjacent locating bearing rather than expecting the float cylindrical set to hold thrust on the 85 mm shaft.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Induction-heat the 85 mm inner ring (max 120 °C) and mount it before fitting the outer ring; the ring mass makes square guidance essential — driving through the rollers brinells the 150 mm raceway.
• Wide (22/23) and light (10/49) executions at 85 mm bore share bore but not OD/width; check the full N200 series code before substituting, because housing and shoulder geometry will not interchange.
• The 28 mm width and abutment faces must be square to the axis; a tilted spacer concentrates load across the roller set and shows as uneven raceway polish on the 85 mm inner ring.
• Grease limiting speed 4,500 r/min and oil 5,300 r/min are different limits for N217: the first is the cage/lubricant mechanical ceiling, the second assumes real oil flow rather than an oil bath.
• The 32.5 mm section at 85 mm bore leaves a narrow oil path; with the standard cage the relubrication groove and oil-level design must keep grease from churning in the 28 mm-wide cavity.
• The 134/140 kN ratings, 16.3 kN Pu and 1830 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for N217 (standard execution); other makes sharing the ISO 15 envelope revise internal geometry without changing the order number, so keep the 2203E reference with the specification for critical drives.