NUKR40 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with NUKR40. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
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Find by measured dimensions
Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.
NUKR40 dimensions and recorded technical data
Use the named dimensions for each complete record below. A generic d×D×B answer is not asserted where the base record is missing, dimension symbols are unverified, or the product uses a different geometry such as a housing or thrust assembly. Suffix records are not substituted for a missing base specification.
The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 3 recorded variants are listed. A dash means the value is missing, not zero.
Catalogue parameters for NUKR40
Choose the complete brand and marking before reading a value. These source-labelled records add dimensions, construction and engineering properties where they were recorded; a shared model number does not establish interchangeability.
Units, ranges and minimum/maximum qualifiers are retained. The data is a dated catalogue reference, not a certified drawing, a complete current specification or an operating approval.
INA NUKR40 — 29 recorded parameters
Stud type track roller
Reference: Schaeffler medias — INA; source snapshot 2026-10-03.
NUKR40 is a stud-type track roller, with roller outside diameter 40 mm, stud fit diameter 18 mm and overall width B 58 mm. Its outer-ring width C is 20 mm.
The number in this designation refers to the roller size, not to a free inner-ring bore. Match the stud fit, fixing thread, effective stud length and support arrangement, not only the roller diameter.
The current manufacturer designation is NUKR40; its family description retains NUKR..-A. Catalogue nut torque, grease speed and permissible outer-ring loads apply to that documented construction, not to unrelated mounting bolts or every replacement.
Manufacturer product identity and parameters checked on 2026-10-03. A catalogue reference is not a certified drawing or an application approval.
Main Dimensions & Performance Data
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Outside diameter | D | 40 mm |
| Fit diameter of roller stud / stud | d 1 | 18 mm |
| Width | B | 58 mm |
| Basic dynamic load rating, radial | C r w | 19,100 N |
| Basic static load rating, radial | C 0r w | 24,800 N |
| Fatigue load limit, radial | C ur w | 3,250 N |
| Speed on permanent grease lubrication | n D G | 5,500 1/min |
| Permissible static load, radial | F 0r per | 24,800 N |
| Permissible dynamic load outer ring, radial | F r per | 12,900 N |
| Weight | ≈m | 0.239 kg |
Dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Witdh of thrust washer | B 1 | 21.6 mm |
| Bolt/stud length effectively | B 2 | 36.5 mm |
| Distance to lubrication hole | B 3 | 8 mm |
| Width, outer ring | C | 20 mm |
| Protrusion outer ring to thrust washer | C 1 | 0.8 mm |
| Minimum chamfer dimension | r min | 1 mm |
| Stop diameter of thrust washer | d 2 | 22 mm |
| Diameter lubrication hole | d 3 | 3 mm |
| Thread | G | M18X1,5 |
| Thread length | I G | 19 mm |
| Width of flats | W | 8 mm |
Additional information
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Drive-fit lubrication nipple | Not separately recorded | NIPA2X7,5 |
| Tightening torque nut | M A | 87 Nm |
Recorded construction
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Sealing | Not separately recorded | 2LB — Labyrinth seals on both sides |
| Outer ring profile | Not separately recorded | IOP — Optimized INA-profile |
| Grease nipples | Not separately recorded | 2x — Drive-fit lubrication nipple unmounted 2x |
| Relubrication | Not separately recorded | KSP — Via head, stud and fit |
| Assembling aid head | Not separately recorded | I6 — Hexagon socket |
| Assembling aid stud | Not separately recorded | I6 — Hexagon socket |
No recorded variant matches these filters. Clear a filter to see other records; no substitute has been inferred.
| Brand / full designation | Named dimensions (mm / in) | Dynamic C (kN) | Static C0 (kN) | Reference speed (rpm) | Limiting speed (rpm) | Mass (kg / g) |
|---|---|---|---|---|---|---|
| INANUKR40Stud type track roller |
| 19.1 kN | 24.8 kN | — | 5500 rpm | 0.239 kg239 g |
| SKFNUKR 40 ACam follower (stud-type track roller) with integral sealing and relubrication feature |
| 19 kN | 22 kN | — | 4500 rpm | 0.284 kg284 g |
| SKFNUKR 40 XACam follower (stud-type track roller) with integral sealing and relubrication feature |
| 19 kN | 22 kN | — | 4500 rpm | 0.297 kg297 g |
Compare recorded seals, clearance, precision and materials
Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.
| Brand / designation | Closure | Original precision | Clearance | Cage | Material | Lubricant |
|---|---|---|---|---|---|---|
| INA NUKR40 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF NUKR 40 A | Seal on both sides | Not recorded | Between C2 and CN | Without | Bearing steel | Grease |
| SKF NUKR 40 XA | Seal on both sides | Not recorded | Between C2 and CN | Without | Bearing steel | Grease |
How to compare these values
- Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
- Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
- C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
- Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
- A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.
Related prefix matches — other model numbers may appear
These discovery results can contain a longer number or a different component. They are not specifications for the requested exact model. Open the complete product to inspect its original geometry.
NUKR40
Stud type track roller
View full technical record →SKFNUKR 40 A
Cam follower (stud-type track roller) with integral sealing and relubrication feature
View full technical record →SKFNUKR 40 XA
Cam follower (stud-type track roller) with integral sealing and relubrication feature
View full technical record →Check the drawing before substituting
Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.
Reference basis & data limits
Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.
Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.