Airtac LSH Linear Guide Rail LSH20BK-HL-H-C-M6
The AirTAC Airtac LSH Linear Guide Rail LSH20BK-HL-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-HL-H-C-M6
One AirTAC LSH long square carriage for size 20 rail - this SKU contains the block only, at high accuracy, with an M6 tube fitting, and it is supplied without a rail. Inside the elongated body, four rows of recirculating balls ride 45 degree X-shaped arc raceways with two contact points each, which gives the block its equal ratings in all four directions and its ability to absorb slight misalignment of the mounting face instead of locking up. The matching rail is a true 20 mm wide - LSH size codes above 20 do not always equal the width, so check 25 and 30 layouts carefully.
Figures per block: C 22.2 kN, C0 37.6 kN, moments 0.35 / 0.34 / 0.34 kN.m for MR / MP / My, H-grade parallelism 7-28 um. The long body's grease space is 2.7 cm3 on first fill against 1.8 cm3 on the standard block, and with static at roughly 1.7 times the dynamic rating here, the slow heavy stroke is well covered.
Airtac LSH Linear Guide Rail LSH20BK-HL-H-C-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH20BK-HL-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 | 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-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-HL-H-C-M6 Is Used
Heavy pallet transfer station
A pallet transfer shuttle crawling under load stresses static capacity more than speed; the 37.6 kN C0 of the long block suits the slow heavy stroke, and the 100 km interval is measured on distance, so gentle cycles stretch far beyond the 3 to 6 month minimum check.
Cantilevered glue or sealant head
A dispensing head overhanging a single carriage is an MR problem: at 0.35 kN.m the long body carries the overhang a standard block cannot, with no change to the rail or the machine base.
Packaging machine carriage replacement
A case packer's worn long block swapped for a new one keeps the original machine geometry: match the C pairing letter to the existing rail, re-torque the mounting screws and charge 2.7 cm3 of grease before running.
Is the Airtac LSH Linear Guide Rail LSH20BK-HL-H-C-M6 the Right Guide?
For a slow, heavy or cantilevered duty, work the numbers in order: check C0 37.6 kN against any static shock or accidental overpress, then C 22.2 kN against travel life, then MR 0.35 kN.m against the overhang. Need still more moment? LSH25 lifts MR to 0.44 kN.m in one part, or a second block shares tipping along the travel. Lighter, tighter-envelope work may fit LRM - its load ratings are not published, so we verify them with you - and short-travel, high-rigidity points of call belong to LGC.
Checklist: carriage-only form; size 20; square long body; H accuracy; M6 fitting from the size 20 family; C pairing code, which must equal the letter on the rail it will run on.
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-C-M6 FAQ
Here: dynamic C 22.2 kN; static C0 37.6 kN; moments MR 0.35, MP 0.34, My 0.34 kN.m; H-grade running parallelism 7-28 um; rail screws M5 torqued to 882 N.cm steel, 588 N.cm cast iron, 441 N.cm aluminium; grease Mobilux EP2 or equivalent, 2.7 cm3 first charge and 0.9 cm3 per top-up, repeated every 100 km of travel or every 3 to 6 months.
A single carriage block - no rail, no preload code, no rail length, because those positions only exist on complete-set codes. The C is the pairing code that matches this block to an LSH20 rail of the same model; the two must share the letter for the pair to deliver its designed smoothness, preload and accuracy. Take the letter from your existing rail or the original order confirmation, and remember LSH blocks and rails interchange within this model only - not across other ranges or brands.
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-C-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.