Airtac LSH Linear Guide Rail LSH20BK-HL-H-B-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-HL-H-B-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-B-M6
This listing is for the block alone - an AirTAC LSH long square carriage, high accuracy grade, with an M6 grease fitting and no rail included in any form. The H in HL means the compact square body; the L means the long version, which stretches the ball circuit to buy moment capacity. Four rows of balls seat in 45 degree X-pattern arc raceways at two points per ball, so the block takes upward, downward and side loads alike and self-aligns slightly against mounting-surface error on its matching LSH20 rail, 20 mm wide.
The long body changes the numbers: C rises to 22.2 kN and C0 to 37.6 kN, but the bigger jump is in moment - MR reaches 0.35 kN.m against 0.27 for the standard block, roughly 30 percent more moment for about 19 percent more dynamic rating. That asymmetry is why cantilevered loads are usually sized on MR, not C. H grade parallelism runs in the 7-28 um band.
Airtac LSH Linear Guide Rail LSH20BK-HL-H-B-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-HL-H-B-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-B-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-B-M6 Is Used
Cantilever loader on a packaging line
A horizontal cartoner feed arm hanging off a single block is limited by MR, and the long body's 0.35 kN.m rating suits the overhang where a standard-length block would be the weak link.
High-cycle gantry upgrade
A pick-and-place gantry running short cycles burns through grease fast: at a 300 mm stroke cycling once a second, 100 km of travel passes in a matter of days, so fit grease-ready long blocks and top up by distance, not by the calendar.
Custom jig and fixture build
A welding jig slide built around an existing B-coded rail takes this high-accuracy long block, giving the fixture builder a stiffer overhang without changing the rail or the base machining.
Is the Airtac LSH Linear Guide Rail LSH20BK-HL-H-B-M6 the Right Guide?
If your load hangs off the block - an arm, a spindle, a pick head - size on the 0.35 kN.m MR figure first. Because this is already the long block, the next step in moment is a full size up (LSH25 N lifts MR to 0.44 kN.m in one part) or a second carriage on the rail to share the tipping; note the second block helps along the travel, not across it. For light, compact duties, LRM is the smaller-envelope option, though we must confirm its load figures for you as they are not published; for short travels where crossed-roller rigidity matters more than long recirculating travel, look at LGC.
Checklist: carriage-only form; size 20; square long body; H accuracy; M6 fitting; B pairing code - match it to the letter on your rail before ordering.
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-B-M6 FAQ
Long-block ratings per carriage: C 22.2 kN dynamic, C0 37.6 kN static, allowable moments MR 0.35 / MP 0.34 / My 0.34 kN.m. H grade running parallelism is 7-28 um over the rail length range. Mount the mating rail with M5 screws at 882 / 588 / 441 N.cm on steel / cast iron / aluminium. Grease is Mobilux EP2 or equivalent: 2.7 cm3 first charge, 0.9 cm3 top-up, refreshed every 100 km of travel or every 3 to 6 months.
Just the carriage. There is no rail in this order, and the code carries no preload or rail-length position - those belong to complete-set codes. The B is the pairing letter: order a rail with the same letter and the pair will run at the intended smoothness, preload and accuracy. The block's internal preload is set at the factory and travels with the carriage, so a correct pairing preserves it.
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-B-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.