Airtac LSH Linear Guide Block LSH20BK-F1L-P-E-M6
The AirTAC Airtac LSH Linear Guide Block LSH20BK-F1L-P-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
- AccuracyP — precision 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 Block LSH20BK-F1L-P-E-M6
This is a carriage-only listing: one AirTAC LSH20 long top-flange (F1) block at precision (P) accuracy, with an M6 grease fitting and pairing code E. It contains no rail. Pair it with an LSH20RLX rail carrying the same E letter - that letter is the manufacturer's matching key between rails and blocks. Four rows of recirculating balls sit in 45 degree X-pattern raceways, giving equal capacity in all four load directions and enough self-alignment to swallow small machining errors in the mounting face. The rail beneath it measures 20 mm wide.
Precision grade tightens running parallelism to a 3-21 um band, against 7-28 um for high grade - worth having when the block feeds a measuring or optics axis. Static reserve is generous: C0 37.6 kN sits at roughly 1.7 times the 22.2 kN dynamic rating, so shock loads and accidental overpresses eat into margin rather than into raceway life. Dynamic C remains the figure for travel-life sizing; C0 only guards against permanent denting under static and impact load.
Airtac LSH Linear Guide Block LSH20BK-F1L-P-E-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Block LSH20BK-F1L-P-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, 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 | P — precision 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 Block LSH20BK-F1L-P-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. |
| P | P — precision 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 Block LSH20BK-F1L-P-E-M6 Is Used
Surface grinder cross-slide
Re-fitting the traverse block on a toolroom surface grinder's cross-slide suits a precision-grade flange block: the 3-21 um parallelism band holds the wheelhead square to the table over the full stroke.
Bottling-line label head
A label head sweeping across moving bottles cycles fast; the long block spreads the moment from the overhung applicator, and the 100 km re-grease interval keeps maintenance predictable on a two-shift line.
CoreXY printer upgrade
Upgrading a large-format CoreXY printer from standard to long precision blocks on its 20 mm rails smooths the bed carriage, and the F1 flange bolts down without machining new holes in the aluminium plate.
Is the Airtac LSH Linear Guide Block LSH20BK-F1L-P-E-M6 the Right Guide?
Check the duty in both directions before ordering. A light, compact duty may suit LRM, whose load ratings are not published - send us the load case and we will confirm whether it carries it. If 22.2 kN dynamic or 0.35 kN.m moment falls short, move up to LSH25 rather than adding blocks: a second carriage on the rail mainly resists tipping along the travel, while the size-up lifts MR about 63 percent in one part. For short strokes needing crossed-roller stiffness, LGC is the better family.
Ordering checklist: carriage only (rail separate), size 20 against load and moment, F1 flange with long body, P accuracy, pairing code E on carriage and rail alike, M6 nipple. On a flange block a side-mounted nipple may foul neighbouring parts or stand proud of the top face - verify clearance before mounting. This code carries no preload position, so state any preload requirement at enquiry when the rail is ordered.
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 Block LSH20BK-F1L-P-E-M6 FAQ
For this size 20 long carriage: dynamic C 22.2 kN, static C0 37.6 kN, allowable moments MR 0.35, MP 0.34, My 0.34 kN.m. Precision grade running parallelism lies between 3 and 21 um across the rail-length range. Rail fixing is M5 at 882 / 588 / 441 N.cm for steel, cast iron and aluminium beds. Lubrication: 2.7 cm3 first fill, 0.9 cm3 top-up per carriage, re-grease at 100 km of travel or every 3 to 6 months. Mobilux EP2 is the factory fill.
You receive one long top-flange carriage, greased and sealed - no rail is supplied with this code. Matching works through the pairing letter: your rail must be an LSH20RLX with the same E code, so copy the complete designation off the old part or the rail end face before ordering. If the stamping is unreadable, send a photo of it and we will identify the correct letter.
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 Block LSH20BK-F1L-P-E-M6
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.