Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6 is a standard-type profile linear guide on a 20 mm wide rail. Four rows of balls contact X-shaped raceways at a 45° angle, so the guide carries load equally in all four directions and absorbs small mounting errors inside the carriage instead of binding.
- SeriesLSH
- Supplied asCarriage / block only
- SizeLSH20
- Rail width20 mm
- Carriage lengthLong carriage
- AccuracyN — normal grade
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6
AirTAC LSH20 carriage, bought on its own: a long F1 flange block that bolts to the machine from the top, normal accuracy grade, M6 nipple, and explicitly no rail. The C in its pairing code links it to a matching LSH20 rail; a D rail or an E rail will not pair with it cleanly, so copy the letter from the part you are replacing. Four rows of balls at a 45 degree contact angle in crossed arc raceways give the block balanced capacity in every direction and let it run over slight flatness faults in the mounting seat within the allowable values - self-alignment is a courtesy, not a correction service. Size 20 LSH runs on a true 20 mm rail.
Ratings per block: 22.2 kN dynamic, 37.6 kN static, moments 0.35 / 0.34 / 0.34 kN.m (MR/MP/My). Normal grade running parallelism sits between 12 and 37 um depending on rail length - ample for machine slides, tight for metrology, where the H-grade version of this same block is the better call. The long body also pitches less under an offset load than the standard-length LSH20 block, which matters for anything overhung.
Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Carriage / block only |
| Construction | Recirculating ball, four ball rows on X-shaped raceways at a 45° contact angle, self-aligning |
| Size code | LSH20 |
| Rail width | 20 mm |
| Carriage style | Flange, top mounting |
| Carriage length | Long carriage |
| Basic dynamic load rating C | 22.2 kN per carriage |
|---|---|
| Basic static load rating C0 | 37.6 kN per carriage |
| Allowable static moment | MR 0.35 / MP 0.34 / My 0.34 kN·m |
| Accuracy grade | N — normal grade |
| Mounting screws | M5 — 882 N·cm into steel, 588 cast iron, 441 aluminium |
| Lubrication | Pre-filled with Mobilux EP2; re-grease every 100 km of travel or every 3–6 months |
| Interchangeability | LSH carriages fit LSH rails of the same model, matched by the pairing code |
Specifications follow the official AirTAC LSH catalogue. The catalogue page does not state the carriage or rail base material. Sizes 35 and 45 exist in the catalogue but are not stocked here; they are available to order. This item is a carriage only. Order a complete set if you also need a rail.
Model Code: Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 20 | Size code. |
| BK | Carriage / block only — no rail supplied. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| L | Long carriage. |
| N | N — normal grade. |
| Pairing code | Rails and carriages must share a pairing code. Take it from the original part when replacing. |
| -M4 / -M6 / -A01… | Grease nipple or tube-fitting type. Restricted by size: size 15 the M4 family, 20–35 the M6 family, 45 the PT1/8 family. |
What Is In The Box
| This order | Carriage / block only |
|---|---|
| Rail | No — not supplied with this item |
| Carriage | Yes, one |
This is a carriage on its own. NO RAIL IS INCLUDED. If you are not sure which form you need, send us the machine or the original part number and we will confirm it before you order.
Where the Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6 Is Used
Bench drilling jig slide
A drilling jig that indexes workpieces along a slide needs repeatable position, not metrology. This N-grade block on its C-coded rail keeps the jig fence true, and M5 rail screws at 882 N.cm in steel hold the datum flat.
Warehouse divert-arm slide service
In a parcel hub, the divert arm's slide takes side hits from misaligned cartons. Keep one of these carriages on the shelf against that day - the swap takes minutes and costs roughly a quarter of a complete guide.
Machine-vision camera slide
A camera riding a slide above a bottling line must sit square to the bottles or the inspection software flags false rejects. The long body resists pitch under the overhung camera, and N-grade parallelism of 12-37 um is far tighter than the lens needs.
Is the Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6 the Right Guide?
Start from the pairing letter, then the numbers. Keep this block if 22.2 kN dynamic, 37.6 kN static and 0.35 kN.m MR clear your worst load case; move to a long LSH25 block if the moment is close to the limit; drop to LRM if the frame is small and the duty light - its ratings are unpublished, so we check them for you. Short-travel, high-rigidity axes are LGC territory. Confirm before checkout: carriage only, no rail in this SKU; size 20 by load and moment together; F1 top-flange mounting; long body; accuracy N; M6 fitting; a grease plan against the 100 km or 3-6 month interval; and pairing code C on block and rail alike. For complete sets, remember tighter preload demands a tighter mounting surface.
Quick checklist
- ✓ Complete set, carriage only, or rail only?
- ✓ Worst-case moment, not just straight load
- ✓ Travel length and mounting space
- ✓ Accuracy grade and preload
- ✓ Mounting surface ground or finish-milled
- ✓ Pairing code, if replacing a part
Installation & Maintenance Notes
- check Mounting surface must be ground or finish-milled.
- check Torque the rail screws per the recommended figures, in sequence.
- check Keep the mounting corner radius inside the stated R maximum.
- check Do not angle the carriage onto the rail; balls can drop out.
- check Drive the supplied bolt caps into the mounting holes.
- check Re-grease every 100 km of travel or every 3–6 months.
- check Installation by qualified personnel per AirTAC docs.
Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6 FAQ
Dynamic rating 22.2 kN, static rating 37.6 kN, allowable moments MR 0.35, MP 0.34 and My 0.34 kN.m, all per block. Normal grade parallelism: 12 to 37 um across the rail-length bands. Mating rail screws: M5, tightened to 882 N.cm in steel, 588 N.cm in cast iron, 441 N.cm in aluminium. Grease per long block: 2.7 cm3 at first fill, 0.9 cm3 top-ups, re-greased after every 100 km of travel or every 3 to 6 months, whichever occurs first. The shoulder radius at the rail seat must stay at or below 0.5 mm.
Sold without any rail - this SKU is one long F1 top-flange carriage, normal accuracy, M6 nipple, and that is all. C is the pairing code that ties the block to an LSH20 rail of the same letter; carriages and rails of one LSH model are interchangeable within a code, so a worn C block drops onto your existing C rail without re-shimming. Verify the letter before ordering, and never assume a rail from another manufacturer will run with it.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac LSH Linear Guide Rail LSH20BK-F1L-N-C-M6
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