THKRSH9KMUU + 55LMMiniature Linear Guide Block and 55 mm Rail – 9 mm Rail Width, Stainless Steel, Seals Both Ends

Product Description

What this part is

THK miniature LM guide, block and rail assembly. Manufacturer: THK. Part Number: RSH9KMUU + 55LM. Size: 9. Rail Width: 9 mm. Rail Length: 55 mm. Block Form: wide block, fixing bolts entering from above. Seal Type: UU, seals fitted at both ends of the block. Material: stainless steel rail, block and balls. Rolling Elements: balls. Number Of Rows: 2. Raceway Form: Gothic arch. Load Direction: four-way equal load. Design Units: Metric. Country of Origin: Japan.

Decoding the designation

The 9 is the size code and fixes the rail width at 9 mm. K identifies the block form whose fixing bolts enter from above, so the block is bolted down through its own top face and the moving table sits directly on it. M is the stainless-steel execution. UU is the seal code for seals fitted at both ends of the block. The +55LM suffix is the LM rail supplied with it, 55 mm long. Seal Type: UU. Rail Length: 55 mm.

What these specs mean in practice

Two rows of balls run in Gothic arch raceways precision-ground into both the rail and the block, and end plates built into the block circulate the balls so travel is limited only by rail length rather than by a finite ball stroke. Load Direction: four-way equal load — the block carries downward, upward and both lateral loads to the same rating, so one block on one rail takes a moment load that would otherwise need two parallel rails. The wide block form carries more effective balls on a broader rail, which raises moment rigidity for the same envelope. Material: stainless steel throughout the rail, block and balls, giving corrosion resistance in wash-down and laboratory service. Seal Type: UU — end seals at both ends of the block wipe the rail on every pass, keeping swarf and dust out of the ball circuit and grease in it. Rail Width: 9 mm, which is at the miniature end of the range where panel space and moving mass are the constraints.

Quantity and configuration

Unit Quantity: 1 Pc. One block on one 55 mm rail, supplied as an assembly.

Interchange guidance

Size 9 blocks run on size 9 miniature rail. Rail length is a separate ordering dimension from block size, so a size-9 block transfers onto any size-9 rail of a different length. Searchable variants of the number: RSH9KMUU, RSH9KMUU+55LM, RSH 9 KMUU, RSH9 KMUU, RSH-9-KM-UU, RSH9KM UU 55LM.