22313EMKD1 bearing: complete specifications & equivalents
The 22313EMKD1 is a ISO 15 radial bearing sized 65 x 140 x 48 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 65 mm |
| Outer diameter D | 140 mm |
| Width B | 48 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass, machined (M1) |
| Basic dynamic load rating C | 369 kN |
| Basic static load rating C0 | 343 kN |
| Fatigue load limit Pu | 23.4 kN |
| Limiting speed (mechanical) | 3300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 3430 g |
| Manufacturer designation | NTN 22313EMKD1 |
| Standard | ISO 15 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
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.
Dimensions in inches & 22300-series range
| Bore d | 2.559 in |
|---|---|
| Outer diameter D | 5.512 in |
| Width B | 1.89 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 37.5 mm |
| Smallest bore in 22300-series | 40 mm |
| Largest outer diameter in 22300-series | 620 mm |
| Width range across 22300-series | 33–185 mm |
| Bore position in 22300-series (smallest first) | 6 of 28 |
| Bore above smallest 22300-series size | 25 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 22313EMD1 | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same NTN 22300-series envelope, cage and ratings; this is the tapered-bore execution (K, 1:12) of the cylindrical-bore 22313EMD1 — mounting (adapter/withdrawal sleeve or tapered seat, drive-up) differs. Verify shaft arrangement. |
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 22313EMKD1 model number is decoded
The NTN order number 22313EMKD1 identifies a 65×140×48 mm (2.559 × 5.512 × 1.89 in) spherical roller bearing, 1:12 tapered bore (K), to the ISO 15 boundary plan. The leading digits are the ISO 15 dimension series (22300 series); the bore code resolves to 65 mm (two-digit code ×5, with the 00–03 exception table), and 140 mm OD / 48 mm width follow the general plan. At 369 kN C and 3430 g mass the 22300 series part is built for shock and vibration; the 48 mm-wide ring needs square abutments to keep both rows equally loaded. Pu 23.4 kN against C0 343 kN anchors the contamination derating; for dirty mining duty the adjusted life of 22313EMKD1 moves with cleanliness far more than with small C variations. Supply grease through the D1 feature during commissioning and at the calculated interval, rotating the 65 mm bore assembly by hand to distribute it across both rows.
Typical equipment & failure modes
Common applications
- heavy conveyor and bucket-excavator pulleys
- jaw/cone crusher eccentric and shaft positions
- paper-machine dryer and press rolls
- cement-mill and kiln auxiliary drives
Known failure patterns
- raceway spalling at the roller ends when misalignment or deflection concentrates the line contact
- pressed EA cage fatigue under sustained vibration when minimum load is not maintained
- sliding wear and heat when relubrication intervals ignore the groove (D1/W33) supply path
- fretting corrosion between adapter sleeve and tapered bore when the drive-up is insufficient
- rolling-contact fatigue after the catalogue L10 life at the actual load
Selection pitfalls — read before you substitute
- Mount the 65 mm ring with induction heat or the sleeve drive-up procedure; at 3430 g cocking damages the spherical raceways, and repositioning after seating is impractical.
- K and K30 are different tapers — K is 1:12 and K30 is 1:30 on the wide series; an adapter sleeve for one will not mount the other 65 mm bearing, and drive-up procedures differ.
- Never substitute 22313EMKD1 by envelope alone: the 343 kN C0 and 23.4 kN Pu are specific to the NTN EM machined-brass-cage execution, and vibrating duty depends heavily on cage identity.
- The 1:12 tapered bore is the only difference from the cylindrical-bore 22313EMD1: envelopes and ratings match, but drive-up tooling, sleeve and seat do not — never mix the two mounting methods.
- Open spherical rollers swallow dust in mining duty; specify labyrinth or taconite seals externally, or the 3,300 r/min grease rating is lost to abrasive wear long before fatigue.
- The 369/343 kN ratings, 23.4 kN Pu and 3430 g mass are NTN Ball and Roller Bearings CAT.No.2203E values for 22313EMKD1 (EM machined-brass-cage/D1); another maker's same-envelope part revises internal geometry, so re-verify ratings and cage before substitution on vibrating or rated drives.
Frequently asked questions
What are the dimensions and catalogue data of 22313EMKD1?
22313EMKD1 is an NTN double-row spherical roller bearing to ISO 15: 65 mm bore, 140 mm OD and 48 mm width (2.559 × 5.512 × 1.89 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 369 kN, C0 343 kN, Pu 23.4 kN, grease limiting speed 3,300 r/min, oil 4,100 r/min, mass about 3430 g. It is open, with one-piece machined brass cage (EM high-capacity design) and a 1:12 tapered bore.
What is the difference between the K/K30 tapered bore and the cylindrical bore versions?
K denotes a 1:12 tapered bore. 22313EMKD1 mounts on an adapter sleeve (or tapered shaft seat) and is driven up to the specified residual clearance; its cylindrical-bore counterpart in the same envelope and ratings is 22313EMD1.
What do EA and EM mean on NTN spherical roller bearings?
EA is the NTN standard-capacity/high-capacity execution with a pressed sheet-steel window cage; EM is the high-capacity execution with a one-piece machined brass cage. Both use the optimised symmetric-roller design, but cage identity changes mass, speed behaviour and suitability for duties like vibrating screens, so they are separate order numbers. 22313EMKD1 is the EM machined-brass-cage execution, listed with the ＊ ULTAGE new-generation mark.
What do D1 and W33 mean on 22313EMKD1?
D1 is NTN's outer-ring lubrication feature: an annular groove with oil holes around the outer ring, aligned with a housing grease port so lubricant reaches both roller rows directly. 22313EMKD1 carries D1; W33 is the equivalent industry-spelled annular-groove-and-holes feature seen on other executions.
How much misalignment and axial load can 22313EMKD1 take?
The sphered outer raceway compensates static and dynamic misalignment in the order of 1–2° (verify the exact 2203E figure for the 22300 series); beyond that, load concentrates on one roller row. Load is predominantly radial with a moderate axial share in either direction — 369 kN C / 343 kN C0 — but sustained pure axial load is not recommended because it unloads one row.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.