Airtac LSH Linear Guide Rail LSH20BK-F1N-N-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-F1N-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 lengthStandard 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-F1N-N-C-M6
Ordered as a spare or an upgrade, the AirTAC LSH20BK-F1N-N-C-M6 is the carriage half of the LSH20 guide: one F1 top-flange block, standard length, normal accuracy grade, M6 fitting and pairing code C. The rail is not part of this delivery. Mechanically it follows the standard LSH layout - four ball rows in 45 degree X-arranged arc raceways, two contact points per ball, equal ratings radially, laterally and in reverse, plus self-alignment that soaks up slight errors in the mounting face. Size 20 corresponds to a rail 20 mm wide.
Lubrication is built in: the block is supplied charged with Mobilux EP2, and the M6 nipple accepts top-ups of 0.6 cm3 after the initial 1.8 cm3 fill. Plan on re-greasing every 100 km of travel or every 3 to 6 months - a 300 mm stroke cycled once a second covers that distance in about two weeks, so on busy axes the odometer beats the calendar. Capacity per block stands at 18.6 kN dynamic and 28.6 kN static, with moments of 0.27 / 0.25 / 0.25 kN.m, and normal grade parallelism spans 12-37 um.
Airtac LSH Linear Guide Rail LSH20BK-F1N-N-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-F1N-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 | 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 | 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-F1N-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. |
| N | Standard 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-F1N-N-C-M6 Is Used
Glass cutting table gantry
Glass cutting tables sweep a scoring bridge through abrasive dust; keeping the M6 nipple greased on schedule keeps the 18.6 kN rating of this carriage available at the cutting head.
Overhead inspection camera gantry
Food and pharma lines run camera gantries above washdown areas; a pre-greased normal-grade block with a predictable 100 km or 3-6 month service interval fits that maintenance rhythm.
Machining centre tool magazine slide
ATC magazines shuttle heavy tool pots on short strokes, where the 100 km re-grease point arrives fast - a 300 mm stroke cycled once a second reaches it in about two weeks - so a correctly lubricated spare block earns its place in the spares cabinet.
Is the Airtac LSH Linear Guide Rail LSH20BK-F1N-N-C-M6 the Right Guide?
Because grease is already in the block, check first that your duty suits grease: up to 60 m/min it is the right choice where no cooling effect is needed, while hotter or heavier continuous duties may call for oil lubrication on a different regime. Beyond that, match like for like: the C on this carriage must equal the C on your rail, size 20 must satisfy both load and moment, and the F1 flange must suit a top-bolted plate. Keep the replacement at the same matched grade as the original, since tighter preload narrows the installation error a guide tolerates. Step down to LRM for light compact duties - its load ratings are not published, so we confirm them - step up to LSH25 (MR 0.44 kN.m) or the long LSH20 block (MR 0.35 kN.m) when moment governs, and across to LGC for short-travel crossed-roller rigidity.
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-N-C-M6 FAQ
Dynamic rating C 18.6 kN, static C0 28.6 kN, and allowable static moments of 0.27 kN.m MR, 0.25 kN.m MP and 0.25 kN.m My per block. Normal accuracy holds running parallelism within a 12-37 um band. The mating rail bolts down with M5 screws at 882 / 588 / 441 N.cm on steel, cast iron and aluminium. Grease: 1.8 cm3 first charge and 0.6 cm3 top-ups through the M6 fitting, every 100 km of travel or every 3 to 6 months.
No rail comes with this SKU - it is the carriage only, and describing it as a complete set would be wrong. The letter C is the pairing code that ties carriage to rail: parts sharing it are matched for accuracy and preload. Take the code from the stamp on your original part or the rail end and order the same letter; if the code is unknown and the rail is unmarked, a complete set is the safer route.
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-N-C-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.