SKF linear bearing unit LUNFSelf-aligning | Open design | Clearance adjustable | 12 - 50 mm
The SKF linear bearing unit LUNF consists of a solid extruded aluminium housing provided with a SKF ball bearing LBCF inside. The LBCF D is self-aligning up to +/- 0,5º. This tilting feature compensates for misalignment, which may be caused by inaccuracies in fitting or manufacturing, or by significant bending of an unsupported shaft. This ball bearing is manufactured according to ISO 10285 and therefore interchangeable on all ISO-compliant brands. The LUNF has a slotted housing with an adjustment screw. With the purchase of a complete LUNF bearing unit, you get a complete bearing including bearing house which is ready to be installed. This makes the LUNF great if you like to buy a ready-made bearing. In contrast tot the LUC. versions of SKF, the aluminium housing of the LUN. versions comprises the entire bearing. This decreases the risk of pollution and ensures that LUN. versions can be mounted differently. The bearing unit is provided with pre-drilled holes on the bottom so that it can be secured to prevent movement. Thanks to the open design of both the housing and the bearing, the LUNF is suitable for shafts with shaft support.
The SKF linear bearing unit LUNF is available in sizes between 12 and 50 mm. For each size there are two different versions available so you always get the appropriate bearing unit. If you are unsure which version is the most suitable, the differences are indicated below. If you are still in doubt you can always contact us on +31 (0)85 – 0661258.
Which SKF linear bearing unit LUNF do I need:
And last, there is a choice to be made between a bearing -2LS with double lip seals or without seals. The advantage of a two-sided sealed bearing is that it is extra maintenance-friendly. This is because you don’t need to worry about the amount or type of grease to be used. It is also no longer necessary for you to provide the bearings with new grease. Also, the bearings are protected against dust, dirt and moisture. The downside is that these seals provide some friction. This means that about 30% of the power will be lost, it is important to take this into account (bearings with two seal have the code -2LS).
The two different SKF linear bearing unit LUNF versions briefly explained:
- LUNF: The standard version of the powerful SKF linear bearing unit LUNF
- LUNF-2LS: Features a two-sided seal, enabling it to be used in a dusty environment.
|Standard implementation (Fw)||2 double lip seals||Width (L)||Heart size (H)||Length (A)||Dynamic load ratings||Static load ratings|
|LUNF 12||LUNF 12-2LS||43 mm||18 mm||32 mm||1080 N||815 N|
|LUNF 16||LUNF 16-2LS||53 mm||22 mm||37 mm||1320 N||865 N|
|LUNF 20||LUNF 20-2LS||60 mm||25 mm||45 mm||2000 N||1370 N|
|LUNF 25||LUNF 25-2LS||78 mm||30 mm||58 mm||2900 N||2040 N|
|LUNF 30||LUNF 30-2LS||87 mm||35 mm||68 mm||4650 N||3250 N|
|LUNF 40||LUNF 40-2LS||108 mm||45 mm||80 mm||7800 N||5200 N|
|LUNF 50||LUNF 50-2LS||132 mm||50 mm||100 mm||11200 N||6950 N|
SKF is the worldwide leader in the field of bearing technology. The company had acquired this positions thanks to the excellent quality and serviceability of its bearings. The company offers all kinds of bearings from a deep groove ball bearing to a cylindrical roller bearing and from a linear ball bearing to a linear shaft support block. With the purchase of a SKF bearing you are sure to have bought top quality.