89432-M bearing: complete specifications & equivalents
The 89432-M is a ISO 104 radial bearing sized 160 x 320 x 95 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 160 mm |
| Outer diameter D | 320 mm |
| Width B | 95 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 1430 kN |
| Basic static load rating C0 | 6400 kN |
| Fatigue load limit Pu | 540 kN |
| Reference speed (thermal) | 480 rpm |
| Limiting speed (mechanical) | 950 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 42000 g |
| Manufacturer designation | 89432 M |
| Standard | ISO 104 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 11.1 cylindrical roller thrust bearings |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 11.1 cylindrical roller thrust bearings) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 11.1 cylindrical roller thrust bearings); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 89400-series range
| Bore d | 6.299 in |
|---|---|
| Outer diameter D | 12.598 in |
| Width B | 3.74 in |
| ISO bore code | 32 |
| Radial section height (D−d)/2 | 80 mm |
| Smallest bore in 89400-series | 80 mm |
| Largest outer diameter in 89400-series | 420 mm |
| Width range across 89400-series | 54–122 mm |
| Bore position in 89400-series (smallest first) | 2 of 7 |
| Bore above smallest 89400-series size | 80 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 89432-M model number is decoded
The extra-heavy 894 series bearing 89432 M carries pure axial load at low to moderate speed: 1430 kN dynamic and 6400 kN static across a 160×320 mm washer pair, 95 mm overall height. Reading the code: the first three digits 894 give the dimension series (extra-heavy 894 series), the last two 32 encode the 160 mm shaft washer bore (code 32 × 5), and M names the cage execution. The three components are separable and interchangeable within the size: WS shaft washer, K-cage roller set, GS housing washer, all running on flat, square seats; the machined brass M cage is standard for this size. The 42000 g mass and 95 mm axial height sit between 160 and 320 mm washer diameters; check the seat shoulder spans the full ring face — a narrow shoulder causes washer fretting long before fatigue does. In vertical shafts let the rotor weight provide the minimum load where possible; otherwise fit a spring pack above the housing washer, and verify the washer face is flooded with oil at first start.
Typical equipment & failure modes
Common applications
- extruder and injection press screw thrust blocks at low speed
- rolling-mill screwdown mechanisms and press adjusters
- slewing and turntable pivots with predominantly axial force
- crane hook crossheads carrying pure hook thrust while the hook swivels
Known failure patterns
- cage wear from rollers being dragged through unloaded zones under fluctuating thrust
- housing-washer rotation scored into an unmachined or loose seating face
- oil starvation at the sliding contact zones of large spherical roller thrust bearings on forced-feed trips
- false brinelling and rust-red witness marks on standby machines under external vibration
- roller skidding and raceway glazing once the thrust falls below the catalogue minimum axial load (factor A)
Selection pitfalls — read before you substitute
- At 160 mm bore the washers are too stiff to conform to a non-square seat: machine the shoulders parallel or the roller ends concentrate load into a narrow stripe across 95 mm.
- Keep the machined brass M cage out of chemical contact with aggressive EP additives beyond its compatibility list; cage damage here redistributes rollers and destroys the washer in hours.
- Do not substitute a thrust ball bearing of the same ISO envelope by rating alone: the cylindrical rollers of 89432 M need different minimum load and lubrication despite the shared 160×320 mm outline.
- The separable washers are not interchangeable across series: an 811 and an 812 washer for the same bore differ in OD and height — order WS/GS parts by the full 89432 M size.
- the 480 r/min reference speed is the thermal criterion under load, the 950 r/min limiting speed is mechanical and oil lubrication typically raises the usable figure.
- The 1430/6400 kN ratings and 42000 g mass are SKF catalogue values transcribed from ch. 11.1 of PUB BU/P1 17000 (PDF table page 892); mounting data — Ea/Eb raceway diameters and the minimum load factor A — appears in the running text because the structured record carries the boundary envelope only.
Frequently asked questions
What ruins a 89432 M in service?
Unloaded running below factor A 3.3 causes skidding; non-square or narrow shoulders fret the washer backs; dry starts and contamination do the rest. Speed ceiling: 950 r/min limiting.
Which dimensions does the 89432 M have?
A 89432 M measures 160 mm bore × 320 mm outside diameter × 95 mm width (6.299 × 12.598 × 3.74 in). From SKF catalogue PUB BU/P1 17000: dynamic C 1430 kN, static C0 6400 kN, fatigue limit Pu 540 kN, reference speed 480 r/min, limiting speed 950 r/min, mass about 42000 g. Raceway diameters Ea 179 mm / Eb 313 mm and minimum load factor A 3.3 guide the seat design.
What is the difference between 811 and 812 series?
811 is the light section and 812 the higher, heavier section for the same bore; 893/894 are the extra-heavy series. 89432 M belongs to the extra-heavy 894 series, 160×320×95 mm.
Are the washers of 89432 M separable?
Yes — shaft washer WS, roller-and-cage set and housing washer GS are separate and interchangeable within the size, but never across series: an 811 and an 812 washer for the same bore differ in OD and height.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 11.1 cylindrical roller thrust bearings on 2026-09-27. Read our editorial & correction policy.