Airtac LSH Linear Guide Rail LSH20BK-F2N-H-E-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-F2N-H-E-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-F2N-H-E-M6
One AirTAC LSH20 flange block, bottom-mounted (F2 style), standard body length, H accuracy grade, ordered alone - there is no rail in the box. Buy it when the pairing letter E on your existing rail matches. Because the fixing holes sit in the underside flange, bolt heads stay out of the working plane, so covers, sensors and brackets can sit on top unobstructed. Four ball rows meet the X-shaped 45 degree raceways at two points each, so loads are carried equally up, down and sideways while slight surface errors are soaked up inside the block rather than turning into binding. The rail this pairs with is 20 mm wide.
Ratings per block: 18.6 kN dynamic and 28.6 kN static - static sits at about one and a half times dynamic across this range, a useful sanity check when comparing quotes. Moment capacity is 0.27 / 0.25 / 0.25 kN.m for MR / MP / My. High grade parallelism runs in a 7-28 um band. The M6 nipple sits on the block side; on flange bodies a side fitting can foul adjacent structure, so check clearance before final mounting.
Airtac LSH Linear Guide Rail LSH20BK-F2N-H-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-F2N-H-E-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 | 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-F2N-H-E-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-F2N-H-E-M6 Is Used
Laser engraving bridge rebuild
On a desktop laser engraver the bridge block draws smoke and belt dust into its ball circuit. A fresh E-coded H-grade block restores the 7-28 um straightness feel the optics need for fine vector work.
Assembly carousel cam slide
Indexing stations on a rotary assembly carousel slide on short linear sections. This bottom-flange block keeps the top surface clear for the cam plate, and the E pairing letter matches the rail already fixed to the frame.
High-cycle lift stage on a sorter
A parcel sorter's reject-lift stage cycles millions of times a year. Swapping in a new standard-length block with an 18.6 kN dynamic rating and a fresh 1.8 cm3 grease charge buys back the lost glide without touching the rail.
Is the Airtac LSH Linear Guide Rail LSH20BK-F2N-H-E-M6 the Right Guide?
Replacing a block rather than a whole guide is usually the cheap fix - this carriage lists at roughly a quarter of a complete LSH20 set - but only if the rail is still true. Run a straightedge or dial test first; if the rail has worn dips, price a complete set instead and match the new rail to the block you order. The match checklist: form (carriage only), size by both load and moment (18.6 kN C and 0.27 kN.m MR govern a light cantilever), F2 bottom flange, standard length, count per axis, rail length if you also need one, H grade with its 7-28 um band, and pairing code E. If your duty is light and space is tight, LRM steps down - its ratings are unpublished, so we verify them for you. If travel is short and you need crossed-roller stiffness, LGC fits better. One size up, LSH25 N, lifts MR to 0.44 kN.m, about 63 percent more, which often beats adding a second block to the same rail.
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-F2N-H-E-M6 FAQ
Per block: C 18.6 kN, C0 28.6 kN, moments 0.27 / 0.25 / 0.25 kN.m (MR / MP / My). H accuracy gives a 7-28 um running-parallelism band. Fix the mating rail with M5 bolts torqued to 882 / 588 / 441 N.cm on steel / cast iron / aluminium. The block arrives with 1.8 cm3 of Mobilux EP2; re-grease 0.6 cm3 after every 100 km of travel or every 3 to 6 months, whichever comes first. Grease lubrication suits travel up to 60 m/min where no cooling effect is needed.
Only the carriage - one F2 bottom-flange block, standard length, H grade, M6 nipple. There is no rail, no screws and no second block. The E in the code is the pairing letter: it must match your rail, so read it off the worn block or the rail drawing before you order. If the marking is gone, send us photographs of the part and we will confirm the match for you.
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-F2N-H-E-M6
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