Airtac LSH Linear Guide Rail LSH20BK-HL-H-E-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-HL-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 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-HL-H-E-M6
The LSH20BK-HL-H-E-M6 is one high-accuracy (H) square long carriage for AirTAC's LSH20 rail, 20 mm wide, sold as the block alone. No rail ships with it. Four ball rows sit in 45 degree X-shaped arc grooves with two contact points each, giving equal capacity downward, in lift-off and sideways, and letting the block self-align over small machining errors in the mounting face. An M6 nipple on the side serves for re-lubrication; the block arrives pre-filled with Mobilux EP2.
Accuracy is the story: H grade holds running parallelism between 7 and 28 um over the rail length, tighter than the 12 to 37 um of N grade, which matters when a fixture must read the same at both ends of stroke. Ratings per carriage: C 22.2 kN, C0 37.6 kN, and moments of 0.35 / 0.34 / 0.34 kN.m for MR / MP / My. The long body lifts moment capacity about 30 percent over the standard block, so the gain here is both precision and overturning strength in one part.
Airtac LSH Linear Guide Rail LSH20BK-HL-H-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-HL-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 | Square (compact) |
| 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-HL-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. |
| 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-HL-H-E-M6 Is Used
Fixture slide on a granite inspection bench
A go/no-go checking fixture traversed by hand over a long rail benefits from the H grade's 7-28 um parallelism band, keeping bore gauges and height gauges reading true at both ends of travel.
Laser marking head on a small gantry
Fast indexing between part nests punishes a loose block; the long H-grade carriage stiffens the head against pitch and adds 0.35 kN.m of moment headroom for off-centre optics.
Rebuilding a drill-fixture slide
When a rebuilt drilling fixture needs straighter travel than its worn N-grade block gives, swapping to this H-grade long block on the same pairing-E rail tightens running parallelism without re-machining the slide.
Is the Airtac LSH Linear Guide Rail LSH20BK-HL-H-E-M6 the Right Guide?
Because this is a BK code, check the box expectation first: carriage only. Downsize to LRM if the load is small and space is scarce - its ratings are not in the public catalogue, so we verify them against your duty before recommending it. Move up to a long carriage or the next size when the overturning moment, not the vertical load, sets the limit; on LSH20 the long body already does part of that work, taking MR to 0.35 kN.m. If travel is short and you need crossed-roller rigidity rather than long recirculating runs, look at LGC instead. Before ordering, confirm: carriage-only form, size 20 against both load and moment, square long block, H accuracy, M6 fitting, and pairing code E matched to your 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-HL-H-E-M6 FAQ
Per carriage: dynamic C 22.2 kN, static C0 37.6 kN, moment ratings MR 0.35, MP 0.34, My 0.34 kN.m. H accuracy gives 7-28 um running parallelism. Rail mounting uses M5 screws torqued to 882 / 588 / 441 N.cm on steel, cast iron or aluminium. Grease: 2.7 cm3 first charge, 0.6 cm3 top-up, repeated every 100 km of travel or every 3-6 months.
You receive one carriage block and nothing else - the rail is a separate purchase. The letter E in this code is the pairing mark: an LSH20 rail must show the same letter for the pair to run at the intended accuracy and preload. If you are replacing a block, copy the code off the old part or the rail; pairing a different letter will not give a matched running pair.
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-HL-H-E-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.