AirTAC LSH Series Standard Linear Guide – High-Rigidity Precision Linear Rail

Specification

AirTAC LSH Series Standard Linear Guide – High-Precision Linear Motion Rail

The AirTAC LSH Series Standard Linear Guide is a recirculating ball-type linear motion system consisting of a precision guide rail and linear block. Steel balls roll through the X-shaped raceways as the block travels along the rail, providing low friction, smooth movement and stable positioning accuracy.

With multiple rail sizes, block styles, preload levels and mounting configurations, the LSH Series is suitable for machinery requiring high rigidity, reliable load capacity and precise linear movement.

Product Construction and Features

According to the supplied product images, the LSH Series includes:

1. X-shaped precision guide rail.
2. Square or flange-type linear block.
3. Four rows of recirculating steel balls.
4. Ball-retainer system.
5. Grease nipple.
6. End covers.
7. Ball-return covers.
8. Single-lip oil scrapers.
9. Double-injection molded dustproof covers.
10. ISO 3290 G10 precision steel balls.

X-Shaped Raceway Design

The X-shaped raceway distributes the ball rows around the rail to support loads from multiple directions.

This design provides:

1. High multidirectional load capacity.
2. Good rigidity under downward, upward and lateral loads.
3. Stable performance under combined loads.
4. Improved resistance to applied moments.
5. Reduced internal play with the correct preload.

Ball-Retainer System

The integrated ball retainer prevents the balls from falling out when the block is removed from the rail.

Benefits include:

1. Easier installation.
2. Reduced ball loss during servicing.
3. Faster block replacement.
4. Lower risk of incorrect reassembly.
5. Improved maintenance convenience.

Dust Protection and Lubrication

The guide block incorporates oil scrapers, dustproof covers and lubrication fittings.

1. The oil scraper removes contaminants from the rail surface.
2. The double-molded dustproof cover protects the ball circulation path.
3. The grease nipple allows lubricant to be supplied directly to the block.
4. Internal sealing helps retain lubricant.
5. Several adapters and fitting directions are available.

Available Rail Sizes

1. LSH15: 15 mm rail width.
2. LSH20: 20 mm rail width.
3. LSH25: 23 mm rail width.
4. LSH30: 28 mm rail width.
5. LSH35: 34 mm rail width.
6. LSH45: 45 mm rail width.

Smaller models are suited to compact systems, while larger models provide increased rigidity and load capacity.

Block Styles

Available block styles include:

1. H: square block.
2. F1: flange block, top mounting.
3. F2: flange block, bottom mounting.
4. F3: flange block, top or bottom mounting.

Block-length options:

1. N – Standard block.
2. L – Long block, excluding the LSH15 series.

Long blocks provide greater contact length and improved resistance to moment loads.

Number of Blocks

The ordering code supports:

1. 1: one block per rail.
2. 2: two blocks per rail.

A two-block configuration improves table stability and resistance to pitching, rolling and yawing moments.

Preload Options

1. A – Standard clearance.
2. B – Light preload.
3. C – Medium preload.
4. D – Heavy preload.

Higher preload improves rigidity and reduces play, but also increases running resistance.

Accuracy Grades

1. N – Normal.
2. H – High.
3. P – Precision.

Normal grade is suitable for general automation, while High and Precision grades are intended for measurement and positioning systems with stricter accuracy requirements.

Surface Treatment

1. Blank: natural finish without additional coating.
2. BB: black chrome coating on the rail and block.

Black chrome treatment provides additional surface protection for selected operating environments.

Rail Mounting-Hole Pitch

1. LSH15: P = 60 mm.
2. LSH20: P = 60 mm.
3. LSH25: P = 60 mm.
4. LSH30: P = 80 mm.
5. LSH35: P = 80 mm.
6. LSH45: P = 105 mm.

Rail length is calculated as:

L = (n − 1) × P + S + E

Where:

1. L: total rail length.
2. n: number of mounting holes.
3. P: mounting-hole pitch.
4. S: first-hole edge distance.
5. E: last-hole edge distance.

Standard Edge Pitch and Maximum Rail Length

Standard S/E values:

1. LSH15, LSH20 and LSH25: 40 mm.
2. LSH30 and LSH35: 55 mm.
3. LSH45: 67.5 mm.

Maximum individual rail lengths:

1. LSH15: 4040 mm.
2. LSH20: 4040 mm.
3. LSH25: 4040 mm.
4. LSH30: 4030 mm.
5. LSH35: 4030 mm.
6. LSH45: 4020 mm.

Butt-jointed rails should be used when the required rail length exceeds the single-rail limit.

Butt-Jointed Rail Option

The LSH Series supports butt-jointed rails for long-travel systems.

1. The T mark identifies a rail joint.
2. The standard joint-end margin is approximately half of the hole pitch.
3. Individual rail-section lengths can be customer-defined.
4. First and last mounting-hole positions are specified during ordering.
5. Careful alignment is required during installation.

Lubrication Fittings and Adapters

Depending on guide size, available options include:

1. M4, M6 or PT1/8 grease nipples.
2. M4-to-M6 adapters.
3. M6-to-M8 adapters.
4. M6-to-PT1/8 adapters.
5. PT1/8-to-M8 adapters.
6. Straight and elbow fittings.
7. SM6 and SP01 lubrication fittings.

These options allow the lubrication connection to match the machine layout.

Mounting and Packing Options

Rail mounting:

1. Blank: top mounting.
2. T: bottom mounting.

Packing:

1. Blank: block and rail supplied as an assembled set.
2. B: block and rail packed separately.

Ordering Code Example

LSH15HN1X220S20AH-AM6-B-T

Code definition:

1. LSH: standard linear guide series.
2. 15: 15 mm guide size.
3. H: square block.
4. N: standard block.
5. 1: one block per rail.
6. X220: 220 mm rail length.
7. S20: 20 mm first-hole edge distance.
8. A: standard clearance.
9. H: high-accuracy grade.
10. AM6: M4-to-M6 lubrication adapter.
11. B: block and rail packed separately.
12. T: bottom-mount rail.

Product Advantages

1. High rigidity and positioning accuracy.
2. Low rolling friction and smooth travel.
3. Multidirectional load capacity.
4. Multiple square and flange block styles.
5. Standard and long block options.
6. Four preload levels.
7. Single and butt-jointed long-rail configurations.
8. Ball retainer for easier installation and maintenance.
9. Integrated dust protection and lubrication system.
10. Flexible surface-treatment and mounting options.

Applications

The AirTAC LSH Series is suitable for:

1. CNC machines and machine tools.
2. Industrial robots.
3. Pick-and-place systems.
4. Automatic assembly equipment.
5. Packaging machinery.
6. Electronics manufacturing systems.
7. Semiconductor equipment.
8. Laser cutting and engraving machines.
9. Precision linear tables.
10. X, Y and Z motion axes.
11. Measuring and inspection equipment.
12. Machine-vision systems.
13. Industrial automation production lines.