Airtac LSH Linear Guide Rail LSH20BK-F1N-H-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-F1N-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 lengthStandard 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-F1N-H-C-M6
This listing is the block, not the guide: one AirTAC LSH20 standard top-flange (F1) carriage in high (H) accuracy with an M6 grease fitting and pairing code C. No rail comes with it. The carriage's four ball rows run at a 45 degree contact angle in an X layout with two contact points per ball, which is what gives LSH its equal four-direction capacity and its tolerance of slight mounting error. The rail beneath it - ordered separately with the same C letter - is 20 mm wide.
As a repair decision, a carriage alone lists at roughly a quarter of a complete set's price, so when the rail is undamaged, replacing the block is usually the cheapest route back to full running accuracy. This standard body rates C 18.6 kN dynamic and C0 28.6 kN static - a static-to-dynamic ratio of about 1.5 that holds across the range. Size on C for travel life; C0 is the guard against brinelling under shock and static overhang, not the life number.
Airtac LSH Linear Guide Rail LSH20BK-F1N-H-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-F1N-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, top mounting |
| Carriage length | Standard carriage |
| Basic dynamic load rating C | 18.6 kN per carriage |
|---|---|
| Basic static load rating C0 | 28.6 kN per carriage |
| Allowable static moment | MR 0.27 / MP 0.25 / My 0.25 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-F1N-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. |
| N | Standard 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-F1N-H-C-M6 Is Used
Reject pusher on a canning line
The pusher that flicks dented cans off a conveyor rides a short 20 mm rail; a block damaged by a jammed can is a two-bolt swap when the rail is sound and the C pairing code is copied across to the order.
Bolt-torque test bench
An automotive bolt-torque rig drives its fixture along a 20 mm guide; the standard block's 28.6 kN static rating covers the clamping reaction, and the flange base keeps the fixture height low.
Parcel sorter drawer cassette
Sortation stations pull drawer cassettes holding scanners and labels on 20 mm guides; replacing a knocked flange block restores the slide without relaying the rail, at roughly a quarter of a full set's cost.
Is the Airtac LSH Linear Guide Rail LSH20BK-F1N-H-C-M6 the Right Guide?
Look two ways before buying. Down: if the duty is genuinely light and the envelope small, LRM may be the leaner choice - we will confirm its unpublished load figures with you. Up: if the moment demand exceeds 0.27 kN.m, LSH25 offers MR 0.44 kN.m, about 63 percent more, in one size step, while a second carriage on the same rail is the fix for tipping along the travel, not for overhung moment. Across: short travel needing crossed-roller rigidity belongs to LGC.
Checklist: carriage only, rail bought to match; size 20 verified against load and moment; F1 top-flange, standard length; H accuracy; M6 fitting; pairing code C shared with the rail. Replace a scored or flat-spotted rail at the same time - a new block on a damaged rail never runs true. If preload matters for the rigidity of your rebuild, raise it at enquiry; the block code itself carries no preload position.
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-F1N-H-C-M6 FAQ
Per carriage: dynamic C 18.6 kN, static C0 28.6 kN, moment ratings MR 0.27 / MP 0.25 / My 0.25 kN.m. High grade running parallelism sits in a 7-28 um band depending on rail length. Rail mounting: M5 screws at 882 / 588 / 441 N.cm on steel, cast iron and aluminium. Lubrication: Mobilux EP2 pre-fill, 1.8 cm3 first charge, 0.6 cm3 top-up, re-grease every 100 km of travel or every 3 to 6 months, whichever arrives first.
One greased top-flange carriage with standard sealing - no rail is included, and no preload is stated because a carriage-only code has no preload position. The critical match is the pairing letter: your rail must be an LSH20RLX with the same C code. Read it from the old block's stamping or the rail end face. A same-model carriage fitted to a same-model rail keeps the running accuracy the pair was built to.
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-F1N-H-C-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.