Who is ZKL and what does it make?
ZKL Group is a Czech bearing manufacturer, covering ball bearings (single and double row angular contact, four-point contact, self-aligning, thrust), roller bearings (cylindrical, spherical, tapered, thrust) and special bearings (hybrid, electrically insulated, split). The range also includes bearings dedicated to the railway and wind energy industries, plus the VOLPROTEQ solution for electrically insulated bearings. For the Romanian market, ZKL means a Central European alternative for sourcing standard and special bearings.
ZKL is a manufacturer focused on the bearing as a product, with a broad technical range of standard and special bearings. Special split bearings allow fitting without fully dismantling the shaft, useful on large gearboxes or industrial fans where a prolonged line stoppage costs more than the bearing itself.
For installations in Romania, the ZKL range is relevant for maintaining machinery that uses standard or special bearings; dimensional compatibility is confirmed from the code or the dimensions of the existing bearing.
What do we supply from the ZKL range?
| Product | Description |
|---|---|
| Radial Ball Bearings | Single or double row ball bearings, with angular contact, four-point contact bearings and self-aligning bearings, for combined radial and axial loads at medium to high speeds. |
| Cylindrical and Tapered Roller Bearings | Cylindrical roller bearings (single row, double row or full complement) and tapered roller bearings, metric or inch, for high radial loads and, in the tapered versions, combined axial loads. |
| Spherical Roller Bearings | Spherical roller bearings, with sealed versions, for compensating shaft misalignment under heavy loads, frequently used in support bearings for long or vibrating shafts. |
| Special Bearings (Split, Electrically Insulated, Hybrid) | Split-ring bearings for fitting without dismantling the shaft, electrically insulated bearings for protection against stray currents and hybrid bearings with ceramic balls for high speeds. |
Why ZKL?
- Czech bearing manufacturer with a broad technical range
- Special split bearings for fitting without fully dismantling the shaft
- Bearings dedicated to the railway industry and wind turbines, under the same brand
- Electrically insulated and hybrid bearings for applications with shaft currents
- Central European sourcing alternative for standard ISO-compatible bearings
Which ZKL codes and series are requested most often?
| Code | Description |
|---|---|
| Radial ball bearings, single row | Ball bearing, single row, radial loads |
| Angular contact ball bearings | Ball bearing, single or double row, angular contact |
| Four-point contact bearings | Ball bearing for combined axial loads |
| Self-aligning ball bearings | Ball bearing, shaft misalignment compensation |
| Thrust ball bearings, single direction | Thrust ball bearing, one load direction |
| Thrust ball bearings, double direction | Thrust ball bearing, two load directions |
| Insert bearings | Ball bearing for mounting in housed units |
| Cylindrical roller bearings, single row | Cylindrical roller bearing, high radial loads |
| Cylindrical roller bearings, double row | Cylindrical roller bearing, very high radial loads |
| Full complement cylindrical roller bearings | Full complement roller bearing, high load capacity |
| Spherical roller bearings, double row | Roller bearing, misalignment compensation under heavy loads |
| Sealed spherical roller bearings | Spherical roller bearing, sealed version |
| Metric tapered roller bearings | Metric tapered bearing, radial and axial loads |
| Inch tapered roller bearings | Tapered bearing in the imperial (inch) system |
| Tapered roller bearings, four row | Tapered bearing for very heavy loads |
| Cylindrical roller thrust bearings | Thrust roller bearing, heavy axial loads |
| Hybrid ball bearings | Ceramic ball bearing, high speeds |
| Electrically insulated bearings | Bearing with protection against shaft stray currents |
| Split roller bearings | Split-ring bearing, fitting without dismantling the shaft |
| VOLPROTEQ | ZKL solution for electrically insulated bearings, with a dielectric layer on the rings |
Where is ZKL equipment used?
- Wind energy: bearings dedicated to turbines
- Rail transport: bearings for axles and bogies
- Steel industry: bearings for heavy loads and abrasive environments
- Mining: bearings resistant to shock and contamination
- Agriculture: bearings for low-maintenance machinery
How do we supply ZKL in Romania?
For ZKL, the manufacturer's technical documentation covers the bearing ranges; exact availability is confirmed in the quotation. We source ZKL bearings to order through EU supply channels, usually in 1–4 weeks from confirmation. For a quotation, send the complete bearing code or, failing that, the bore diameter, outside diameter and width. Availability from stock is not promised for all sizes; some dimensions are confirmed only on a firm order.
Equivalence between a ZKL bearing and a similar dimensional code from another manufacturer is established from the tolerances and precision class in the application's technical drawing.
Frequently asked questions about ZKL
What products does ZKL make?
ZKL makes ball bearings (radial, angular contact, self-aligning), roller bearings (cylindrical, tapered, spherical) and special bearings (split, electrically insulated or hybrid), including for the railway and wind industries.
How do I choose a ZKL bearing by code?
The basic reference is the complete code on the existing bearing or in the technical drawing; failing that, the bore diameter, outside diameter and width of the bearing allow the equivalent dimensional series in the ZKL range to be identified.
How do I choose a ZKL bearing for replacement?
For most standard bearings, ISO dimensions are followed, and confirmation is made from the exact dimensions, not only the commercial code.
What lead time do you offer in Romania for ZKL bearings?
We source to order through EU supply channels, usually in 1–4 weeks, depending on the availability confirmed by the manufacturer for the dimension requested.
What information do you need for a ZKL bearing quotation?
Send the complete bearing code or, if you do not have it, the bore diameter, outside diameter, width and the type of load in the application, as well as the working speed and the precision class required, if the installation has special requirements.
How do I request a ZKL quotation?
Send the ZKL code from the nameplate and the quantity; we reply in English with availability and the lead time written in the quotation.
Request a quoteUpdated: 12 November 2026 · Sources: ZKL Group (manufacturer documentation)