RexrothLF12S/CCam Roller Guide Bearing – LF12 Series, 90 x 45 mm Carriage, 8.3 kN Dynamic Load, Guide-Rod Guided

Product Description

What this part is:

Bosch Rexroth LF12S/C guide bearing, material number 3842535664, from the LF12S cam roller guide range in the Rexroth assembly technology programme. Series: LF12. Product Type: linear guide bearing, cam roller type. Carriage Length: 90 mm. Carriage Width: 45 mm. Carriage Material: die-cast aluminium. Dynamic Load Rating: 8.3 kN. Guidance: via guide rod. Rollers: ball bearing rollers, permanently lubricated. Lubrication: lubricating felts with a guide rod lubrication reservoir. Roller Adjustment: play-free, by eccentric bolts. Profile Slot: 10 mm.

Decoding the designation:

LF — Rexroth’s Linearführung cam roller guide family, the guide-rod-and-roller construction rather than a profiled ball rail.

12 — size 12 within that family, the middle size between the LF6 and the LF20.

S — the short carriage in the size, 90 mm long over a 45 mm width.

C — the guide bearing component, the trolley element that runs on the guide rod.

What these specs mean in practice:

Dynamic Load Rating: 8.3 kN. The LF6 in the same family carries 3.6 kN and the LF20 carries 23.4 kN, so the LF12 sits in the middle of the range for trolley and gantry work on aluminium framing.

Roller Adjustment: play-free, by eccentric bolts. Backing off the eccentrics and re-setting them takes the clearance out of the roller-to-rod contact after wear, which is what keeps a cam roller guide accurate over a long service life rather than needing replacement.

Lubrication: the rollers are permanently lubricated ball bearings, and the felts carry a reservoir that feeds the guide rod. The felts are replaceable from the rear with the bearing still installed.

Carriage Material: die-cast aluminium. That is what keeps the moving mass low on a long transfer, where a steel runner block would add inertia the drive has to accelerate.

Mounting data:

Carriage Length: 90 mm. Carriage Width: 45 mm. Profile Slot: 10 mm. The bearing is a supporting element for brackets and trolleys, running on a guide rail that holds the supporting bearings.

Quantity and configuration:

Unit Quantity: 2 Pcs. Two guide bearings, supplied with their mounting hardware. Rexroth and its distributors sell this material number in packs of two.

Interchange guidance:

Material number 3842535664 and type code LF12S/C identify the same guide bearing. Searchable variants of the number: 3842535664, 3 842 535 664, LF12S/C, LF-12-S-C, LF12S-C, LF 12 S C.

3842535662 is the LF6 guide bearing at 3.6 kN and 3842535663 the LF20 at 23.4 kN — the neighbouring sizes in the same family, running on different guide rods.