Airtac LSH Linear Guide Rail LSH25F1N1X160S20BH-M6
The AirTAC Airtac LSH Linear Guide Rail LSH25F1N1X160S20BH-M6 is a standard-type profile linear guide on a 23 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 asComplete guide set
- SizeLSH25
- Rail width23 mm
- Carriage lengthStandard carriage
- Carriages1
- Rail length160 mm
- AccuracyH — high grade
- PreloadB — light preload
- 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 LSH25F1N1X160S20BH-M6
Ordered as LSH25F1N1X160S20BH-M6, this listing pairs one standard-length top-flange carriage with a 160 mm rail, both finished to grade H accuracy and lightly preloaded (grade B). The X-set of four ball rows on 45 degree arc raceways gives balanced capacity in every direction and a measure of self-alignment, though on a preloaded guide that forgiveness is deliberately narrower. As with all size 25 guides, the rail is 23 mm wide.
The preload stiffens the ball path for repeatably tight positioning, but it narrows what your mounting surface can be out by: at 500 mm rail spacing the allowable height error S drops from 130 um with no preload to 85 um here, and parallelism P from 30 to 22 um. Load figures stay as per catalogue - 26.9 kN dynamic, 39.4 kN static, MR 0.44 kN.m - so you are buying stiffness and a 7-28 um accuracy band, not extra capacity. Machine the corner radius no larger than 1 mm where the rail abuts its shoulders.
Airtac LSH Linear Guide Rail LSH25F1N1X160S20BH-M6 Technical Specifications
| Model | Airtac LSH Linear Guide Rail LSH25F1N1X160S20BH-M6 |
|---|---|
| Series | LSH Series Linear Guide |
| Supplied as | Complete guide set |
| Construction | Recirculating ball, four ball rows on X-shaped raceways at a 45° contact angle, self-aligning |
| Size code | LSH25 |
| Rail width | 23 mm (the size code is not the rail width above size 20) |
| Carriage style | Flange, top mounting |
| Carriage length | Standard carriage |
| Carriages supplied | 1 |
| Rail length | 160 mm |
| Basic dynamic load rating C | 26.9 kN per carriage |
|---|---|
| Basic static load rating C0 | 39.4 kN per carriage |
| Allowable static moment | MR 0.44 / MP 0.38 / My 0.38 kN·m |
| Accuracy grade | H — high grade |
| Preload grade | B — light preload |
| Mounting screws | M6 — 1370 N·cm into steel, 921 cast iron, 686 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 |
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.
Model Code: Airtac LSH Linear Guide Rail LSH25F1N1X160S20BH-M6
| LSH | LSH Series Linear Guide. |
|---|---|
| 25 | Size code — note the rail is 23 mm wide, not 25 mm. |
| H / F1 / F2 / F3 | Carriage style: square, or flange mounted from the top, bottom, or both. |
| N | Standard carriage. |
| 1X160 | 1 carriage on a 160 mm rail. |
| S… | End-hole offset from the rail end, in mm. |
| B | B — light preload — higher preload raises rigidity and tightens how flat the mounting surface must be. |
| H | H — high grade. |
| -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 | Complete guide set |
|---|---|
| Rail | Yes, 160 mm |
| Carriage | Yes, 1 |
Rail and carriage(s) supplied together, matched as a set. 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 LSH25F1N1X160S20BH-M6 Is Used
Optical inspection stage
A camera and telecentric lens carrier on a benchtop measuring station benefits from preload B: the removed play keeps focus and registration repeatable over the 160 mm travel.
Laser marking head rail
Marking heads traverse fast and stop hard; the preloaded carriage damps the bounce that would otherwise smear the spot at the end of each 160 mm pass.
Tool presetter measuring slide
On a presetter that scans a cutter against a camera, the H-grade 7-28 um parallelism band supports measurement repeatability across the slide's short travel.
Is the Airtac LSH Linear Guide Rail LSH25F1N1X160S20BH-M6 the Right Guide?
Choose this over the plain grade A version only when your machining can hold the tighter fit the preload demands - otherwise the stiffness advantage is wasted on a distorted rail. If the envelope is smaller or the duty lighter, LRM is the step down, though we must confirm its unpublished ratings for you. If travel is short and crossed-roller rigidity matters more than long stroke, LGC is the alternative. Order checklist: confirm the form you need (set, carriage or rail), size by both load and moment, carriage style and length, count and rail length, accuracy and preload against the tolerance you can machine, grease fitting, and pairing code for any part replacement.
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 LSH25F1N1X160S20BH-M6 FAQ
C 26.9 kN dynamic and C0 39.4 kN static per block; moment ratings 0.44 (MR), 0.38 (MP) and 0.38 (My) kN.m. Grade H parallelism spans 7-28 um. Fix the rail with M6 bolts at 1370 / 921 / 686 N.cm for steel, cast iron and aluminium respectively. First grease charge is 3.6 cm3 of Mobilux EP2, with 1.1 cm3 top-ups due every 100 km of travel or 3 to 6 months.
Yes, measurably. At 500 mm rail spacing, allowable parallelism error P falls from 30 um (no preload) to 22 um, and height error S from 130 to 85 um - the self-aligning property absorbs only what the catalogue allows, never unlimited error. With preload C the same limits tighten to 20 and 70 um. If your plates and shoulders cannot hold grade B tolerances, the grade A variant of this same set is the safer buy.
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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 LSH25F1N1X160S20BH-M6
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