Airtac LSH Linear Guide Rail LSH20BK-F2L-H-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-F2L-H-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
- AccuracyH — high 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-F2L-H-C-M6
One replacement block: LSH size 20, F2 bottom-flange style, long body, H accuracy grade, M6 grease nipple. In the box you get the carriage with its four rows of balls in X-pattern 45 degree arc raceways - no rail and no mounting hardware beyond what the block itself carries. Self-alignment inside the carriage soaks up slight mounting-surface error, within the allowable values AirTAC publishes for the size.
The economics favour this route when the rail runs true: a carriage alone lists at roughly a quarter of a complete set. Ratings for the long size-20 body: C 22.2 kN, C0 37.6 kN, moments 0.35 / 0.34 / 0.34 kN.m about MR / MP / My. First grease charge is 2.7 cm3 with 0.9 cm3 top-ups, re-greased every 100 km of travel or every 3 to 6 months, whichever comes first.
Airtac LSH Linear Guide Rail LSH20BK-F2L-H-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-F2L-H-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, bottom 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 | H — high 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-F2L-H-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. |
| H | H — high 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-F2L-H-C-M6 Is Used
Workshop slide repair
Swapping a seized block on a bandsaw mitre fence or crosscut stop that rides a 20 mm rail installed years ago, without replacing the rail.
Packaging cam slide
A horizontal cam follower slide on a cartoning machine, where the long body's 0.35 kN.m moment rating absorbs the offset load of the cam lever.
Tooling-plate dispensing axis
Bolt-through mounting under an aluminium tooling plate on a fluid dispensing axis, so no fastener heads stand proud in the travel path.
Is the Airtac LSH Linear Guide Rail LSH20BK-F2L-H-C-M6 the Right Guide?
Replacing a worn block is usually the economic repair when the rail is undamaged - a carriage alone lists at roughly a quarter of a complete set, and the M6 nipple re-greases the same circuit. Get the pairing code off the original part (here C) before ordering; rails and carriages must share it. If your duty is genuinely light with a small envelope, compare LRM - its load ratings are unpublished, so we verify them for you. Short travel with a need for crossed-roller rigidity points to LGC; a governing moment points to keeping this long body or stepping to LSH25 on 23 mm rail. Checklist: form, size by load and moment, flange style, length, count and rail length, accuracy grade, grease fitting, pairing code.
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-F2L-H-C-M6 FAQ
Ratings per carriage: C 22.2 kN dynamic, C0 37.6 kN static, moments MR 0.35 / MP 0.34 / My 0.34 kN.m. H grade gives a 7-28 um running parallelism band across the rail length range. Mount the mating rail with M5 screws at 882 / 588 / 441 N.cm on steel, cast iron and aluminium. Lubrication: 2.7 cm3 first charge, 0.9 cm3 per top-up, interval 100 km of travel or 3 to 6 months, whichever first.
It is not a complete guide - the 20 mm rail is a separate line item; this listing covers one long bottom-flange carriage, greased and fitted with an M6 nipple. Carriage and rail must share the pairing letter: order rail marked C to run with this block. For a replacement, read the letter straight off the code on your old carriage or rail and match it.
Authorized Export Seller
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-F2L-H-C-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.