Airtac LSH Linear Guide Rail LSH20BK-F1L-H-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-F1L-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-F1L-H-C-M6
This SKU is the LSH20 carriage on its own - a long F1 top-flange block at high accuracy grade with an M6 lubrication fitting and pairing code C. AirTAC states LSH carriages are interchangeable within the same model: any LSH20 carriage fits any LSH20 rail and keeps its running qualities, and the pairing letter simply ties this specific carriage to rails sold under the same code so replacements stay traceable. There is no rail in the box and no preload position to declare on a carriage-only code. The ball circuit runs four rows in 45 degree X-arranged raceways, giving the fitted guide its self-aligning behaviour on slightly imperfect mounting surfaces.
Lubrication is handled from the start: the block leaves the factory filled with Mobilux EP2, and the long body takes a first charge of 2.7 cm3 with a 0.9 cm3 top-up through the M6 fitting on a 100 km or 3-to-6-month cycle. One caution specific to this flange style: side-mounted nipples are not recommended on F1, F2 or F3 carriages because the fitting can foul the carriage, so check the grease path and any tube fitting clearance before mounting. Accuracy H runs at a parallelism band of 7-28 um, and the static rating of 37.6 kN sits at about 1.7 times the 22.2 kN dynamic figure - size on C, not on the bigger C0.
Airtac LSH Linear Guide Rail LSH20BK-F1L-H-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-F1L-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 | 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-F1L-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-F1L-H-C-M6 Is Used
Preventive block renewal on a palletising cell
Scheduled 100 km greasing and block swaps keep a palletiser's lift axis running; reordering by pairing code C means a healthy rail is never disturbed.
High-cycle feed axis on an insertion press
Fast short strokes rack up distance quickly - a 300 mm stroke cycling once a second covers 100 km in about two weeks - so a spare long carriage on the shelf cuts downtime.
Carriage refit after re-shimming a CNC router rail
After correcting mounting-surface error on the Y-axis, a fresh H-accuracy carriage is fitted and stroked three carriage-lengths twice to spread an even grease film before production resumes.
Is the Airtac LSH Linear Guide Rail LSH20BK-F1L-H-C-M6 the Right Guide?
Size the replacement the way the original was sized: check the dynamic rating C 22.2 kN and the moment figures together, because on a cantilever load the 0.35 kN.m MR, not the straight load, often decides. One size up to LSH25 - true rail width 23 mm, so re-check the mounting layout - buys about 63 percent more MR if a single block cannot hold the moment, while a second carriage addresses tipping along the direction of travel instead. Lighter, compact duties may fit an LRM guide, whose load ratings are not published, so we confirm before quoting; short-travel, high-rigidity points suit LGC crossed rollers. Then confirm the rest: form (carriage only), pairing code C, style F1, long body, accuracy H, and the M6 fitting for sizes 20 to 35. Note that medium preload on a complete set tightens the allowable mounting error, which is why preload is only specified on matched sets.
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-H-C-M6 FAQ
Long-carriage ratings per block: C 22.2 kN dynamic, C0 37.6 kN static, moments 0.35 / 0.34 / 0.34 kN.m for MR / MP / My. Accuracy H: running parallelism band 7-28 um. Rail-side fixings for size 20: M5 screws at 882 N.cm in steel, 588 N.cm in cast iron, 441 N.cm in aluminium. Lubrication: 2.7 cm3 first charge, 0.9 cm3 top-up via the M6 fitting, repeated every 100 km of travel or every 3 to 6 months.
You receive one LSH20 long F1 top-flange carriage at high accuracy with an M6 fitting, and no rail. The letter C is the pairing code that links this carriage to rails sold under the same code for a traceable replacement; within the LSH20 model itself, carriages remain interchangeable with any rail of the model. Before ordering, read the letter off the part you are replacing so the new block arrives as the matched code.
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-F1L-H-C-M6
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