Keep the evidence with the model shortlist
The models on this page illustrate bearing roles; they are not confirmed replacements for an unspecified machine. Keep the original complete marking, machine position, load and speed duty, temperature, lubricant and mounting arrangement together. Check the candidate's recorded values below and leave unreported parameters unknown.
Check drawings and model records · Investigate a failure before replacing it · Plan installation and force paths
What matters in this application
Linear guide interface
Identify round-shaft bushings versus profiled rails, carriage size, preload and accuracy.
Screw support loads
Calculate screw axial force, speed and end-support conditions, including the intended floating end.
System alignment
Check rail parallelism, screw alignment, mounting stiffness and thermal expansion.
Which bearing structures make sense?
Matched linear guides
Use the correct carriage/rail family and compatible preload/accuracy specification.
Check first: Equal external size does not make different rail profiles compatible.
Axial angular-contact screw supports
Investigate where the screw architecture requires a dedicated thrust support.
Check first: The support unit, clamping and screw journal must match the exact bearing design.
Recommended starting points
These candidates illustrate specific roles and envelopes, not a ranked list or interchangeable set. Review each condition before using a model in a design.
ZKLF100200-2Z-XL
100×200×55 mmDedicated axial angular-contact support · 100 mm bore
A large axial-support reference for understanding a purpose-designed combined thrust/precision arrangement.
- Dynamic C
- — kN
- Static C₀
- — kN
- Limiting speed
- — rpm
Before selectionLarge dedicated axial-support reference, not a standard desktop CNC support size or a replacement for a linear carriage. This is not a general small ball-screw support. Confirm journal, mounting, preload, seals and full specification.
Open complete model dataCompare the recorded specifications
Different sizes and bearing structures are shown for different duties. C and C₀ are catalogue load ratings, not permissible equipment loads. Limiting speed is not an approved operating speed.
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| Parameter | INAZKLF100200-2Z-XL |
|---|---|
| Bore d (mm) | 100 |
| Outside D (mm) | 200 |
| Recorded width (mm) | 55 |
| Dynamic C (kN) | — |
| Static C₀ (kN) | — |
| Catalogue limiting speed (rpm) | — |
— = not reported, or not directly comparable for a mounted unit. Width conventions differ for inserts, complete units and bearing assemblies; inspect the dimensional drawing. Values are read from the current BearingScope records, not estimated from model numbers.
Work through the selection
- Separate the guide-rail function from the screw-support function.
- Calculate travel, load, speed and accuracy requirements for each.
- Verify the full rail/carriage and fixed/floating screw interfaces.
- Align and lubricate the assembled system according to its component specifications.
Symptoms worth checking
Travel-dependent binding
Check rail parallelism, screw alignment and mounting distortion.
Axial positioning lost motion
Inspect screw/nut, support retention, preload and couplings as a system.
Symptoms are investigation prompts, not a diagnosis. Isolate equipment safely and follow its maintenance procedures before inspection.
Have the original designation?
Look up the complete model and suffix before comparing potential alternatives.
Application questions, answered
Can a radial bearing replace a fixed ball-screw support?
Not from dimensions alone. Axial stiffness, preload, retention and arrangement determine suitability.
Does an 8 mm bore bearing act as an 8 mm linear bushing?
No. Rotary and translating supports have different contact geometry and motion requirements.
Reference basis & recommendation limits
- NSK — Machine Tools and precision motion components
Application principles are informed by the listed technical references. Model shortlists are BearingScope editorial selections from its database, not manufacturer endorsements or equipment-fit approvals. Confirm the latest exact specification and the complete equipment design before use.