SKF TKSA 31 Shaft Alignment Tool - Precision, Efficiency & Durability
- Wired laser
- Touch display unit in the kit
- Up to 2 m (6.6 ft) between units
Genuine SKF product, SKF
- Regular price
- $5,399.99
- Sale price
- $5,399.99
- Regular price
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$6,511.00
Same-day shipping
Order by 3 PM ET for same-day shipping
Free shipping on orders over $100
Use code at checkout.
SKF TKSA 31
$5,399.99
Why Apollo USA
Alignment tools from Apollo Industries, Oxford, Michigan
Apollo Industries supplies bearings, seals and maintenance tools to businesses across the US, with real people on the phone when you need help choosing a tool.
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Same-day shipping
Order by 3 PM EST for same-day shipping.
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Free shipping over $100
All orders over $100 ship free by ground with code FREESHIP.
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90-day returns
Hassle-free returns on unused items within 90 days.
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Price match
Show us a competitor's advertised price on the same item and we will match it.
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Expert support
Support staff available by phone, web chat or email.
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Need tax exemption or quantity pricing?
We offer special rates for businesses and bulk orders.
Talk to a specialist
2695 Lake George RdOxford, MI 48370
Overview
SKF TKSA 31 shaft alignment tool
The SKF TKSA 31 Laser Shaft Alignment Tool is an accurate, easy-to-use system designed for aligning horizontal rotating machinery. Combining guided alignment software, large laser detectors and a dedicated color touchscreen display, the TKSA 31 helps maintenance professionals accurately align motors, pumps, fans, gearboxes, compressors and other coupled machines.
The SKF TKSA 31 uses the proven three-position 9–12–3 o’clock measurement method to evaluate angular and parallel shaft misalignment. Its automatic measurement function detects when the measuring units are in the correct positions and captures each reading without requiring repeated interaction with the display. Large 29 mm CCD detectors and red line lasers simplify setup and reduce the need for extensive pre-alignment.
After measurement, live correction values clearly show how much the movable machine must be adjusted horizontally and vertically. The system calculates the required shim corrections at each machine foot, while the integrated soft-foot function helps identify unstable mounting conditions that could affect alignment accuracy and machine reliability.
A built-in machine library stores equipment records and previous alignment results for organized maintenance tracking. The TKSA 31 also generates customizable PDF shaft alignment reports that can be exported through a USB drive, making it easy to document completed work and provide proof of alignment.
With measuring accuracy of less than 0.5% ±5 μm and a working distance of up to 2 meters using the supplied cables, the SKF TKSA 31 shaft alignment system provides a practical balance of accuracy, simplicity and affordability. Proper laser shaft alignment can help reduce vibration, bearing and seal wear, energy consumption and unexpected equipment downtime while extending overall machine service life.
Key features
- Three-Position Measurement: Perform easy alignments using the well-known 9-12-3 o’clock method, with 40° positioning flexibility around each measurement point.
- Automatic Measurement: Enables hands-free operation by detecting head positions and capturing data only when correctly aligned.
- Live View Support: Facilitates intuitive measurements and simplifies horizontal and vertical machine adjustments.
- Customizable Reporting: Automatically generate reports after each alignment, complete with customizable notes. Export reports as PDF files for efficient documentation and sharing.
- Machine Library: Organize and access machine details and alignment reports easily, streamlining your workflow and simplifying machine identification.
- Embedded Soft Foot Tool: Establish a solid foundation for alignment by detecting and correcting machine foot issues.
In the case
What comes with the SKF TKSA 31
SKF shaft alignment tool TKSA 31: tech tips
Play video
10 items in the kit
- 2 measuring units (M and S)
- Display unit
- 2 shaft brackets with chains 400 mm (15.8 in) and threaded rods 150 mm (5.9 in)
- Chain tightening rod
- Power supply with country adapters
- 2 USB cables
- Measuring tape
- Printed certificate of calibration and conformance
- Printed quick start guide
- SKF carrying case
The calibration certificate is valid for two years.
Specifications
SKF TKSA 31 specifications
Laser shaft alignment with a cabled pair of measuring units and SKF’s own touch display.
- Measuring method
- Red line laser, 29 mm CCD detectors, inclinometer ±0.5°
- Connection
- USB cables
- Display
- 5.6 in touch display unit, in the kit
- Distance between units
- 0.23 to 6.6 ft, 13.1 ft with extension cables0.07 to 2 m, 4 m with extension cables
- Measuring error
- 0.5%
- Shaft rotation
- 9, 12 and 3 o’clock, 140° in all
- Vertical machines
- No
- Machine trains
- No
- Shaft diameter
- 0.8 to 5.9 in, 11.8 in with optional chains20 to 150 mm, 300 mm with optional chains
- Battery
- Display unit 7 h, measuring units run on its cables
- Protection
- IP54
- Case and weight
- 20.9 × 4.3 × 14.2 in, 10.4 lb530 × 110 × 360 mm, 4.72 kg
- Brand
- SKF
- Designation
- TKSA 31
- UPC / EAN
- 7316576198922
Specifications as SKF publishes them on skf.com.
Full technical data
SKF Laser Shaft Alignment Tool TKSA 31 – Technical Specifications
Sensors & Communication
| Sensors | 29 mm (1.1 in) CCD with red line laser Class 2 Inclinometer ±0.5° |
| Communication | Wired via USB cables |
| System Measuring Distance | 0.07 to 4 m (0.23 to 13.1 ft) Up to 2 m (6.6 ft) with supplied cables |
| Measuring Errors | <0.5 % ±5 µm |
Measuring Units (M & S)
| Housing Material | 20 % glass-filled polycarbonate |
| Dimensions (each) | 120 × 90 × 36 mm (4.7 × 3.5 × 1.4 in) |
| Weight (each) | 180 g (0.4 lb) |
Display Unit
| Display | 5.6" colour resistive touchscreen LCD |
| Housing Material | High-impact PC/ABS with overmould |
| Operating Time | Up to 7 hours (100 % backlight) |
| Dimensions | 205 × 140 × 60 mm (8.1 × 5.5 × 2.4 in) |
| Weight | 420 g (0.9 lb) |
| Software Update | Via USB stick |
Alignment Capabilities
| Alignment Method | Horizontal shafts, 3-position 9–12–3 (min. 140° rotation), automatic measurement, soft foot |
| Live Correction Values | Vertical and horizontal |
| Extra Features | Machine library, automatic .pdf report |
Mechanical & Mounting
| Fixture | 2 × V-brackets with chains, width 21 mm (0.8 in) |
| Shaft Diameter Range | 20 to 150 mm (0.8 to 5.9 in) Up to 300 mm (11.8 in) with optional extension chains |
| Max. Coupling Height | 105 mm (4.2 in) with standard rods 195 mm (7.7 in) with optional extension rods |
| Power Adapter | 100–240 V 50/60 Hz → 12 V 3 A (EU/US/UK/AUS plugs included) |
| Operating Temperature | 0 to 45 °C (32 to 113 °F) |
| IP Rating | IP 54 |
| Carrying Case Dimensions | 530 × 110 × 360 mm (20.9 × 4.3 × 14.2 in) |
| Total Weight (incl. case) | 4.75 kg (10.5 lb) |
Kit Contents
| • 2 × Measuring units (M & S) • Display unit • 2 × Shaft brackets with 400 mm chains & 150 mm threaded rods • Chain tightening rod • Power supply with country adapters • 2 × USB cables • Measuring tape • Certificate of calibration (2-year validity) • Quick start guide (English) • SKF carrying case |
Spare Parts
| Designation | Description |
|---|---|
| TKSA 31-DU | Display unit (incl. 2 × USB adapters) |
| TKSA 31-M / TKSA 31-S | Measuring unit M or S (incl. USB cable & adapter) |
| TKSA ROD90 | 4 × 90 mm threaded rods |
| TKSA 41-STDCH | 2 × 400 mm standard chains |
| TKSA VBK | 2 × V-brackets (no rods/chains) |
| TKSA TOMMYBAR | 1 × Tommy bar |
| TKSA EXTCHARG | Power supply with EU/US/UK/AUS adapters |
| TKSA 31-CC | Empty tool case with inlay for TKSA 31 |
Compare
How the TKSA 31 compares
The TKSA 31 beside the rest of its SKF range. Pick tools to set against it, or switch on Differences only.
Compare with
| Specification | 
Entry levelTKSA 11 | 
This tool
TKSA 31 | 
Wireless laserTKSA 41 | 
Phone and tabletTKSA 51 | 
Up to 10 mTKSA 71 | 
TKSA 71 with accessoriesTKSA 71/PRO |
|---|---|---|---|---|---|---|
| Measuring method | 2 inductive sensors and 3 reference bars, no laser | Red line laser, 29 mm CCD detectors, inclinometer ±0.5° | Red line laser, 29 mm CCD detectors, inclinometer ±0.5° | Red line laser, 20 mm PSD detectors, inclinometer ±0.1° | Red line laser, 20 mm PSD detectors, inclinometer ±0.1° | Red line laser, 20 mm PSD detectors, inclinometer ±0.1° |
| Connection | Bluetooth 4.0 LE | USB cables | Bluetooth 4.0 LE or USB | Bluetooth 4.0 LE | Bluetooth 4.0 LE | Bluetooth 4.0 LE |
| Display | Your phone or tablet, free TKSA 11 app (iOS, Android) | 5.6 in touch display unit, in the kit | 5.6 in touch display unit with camera and QR reader, in the kit | Your phone or tablet, SKF shaft alignment apps (iOS, Android) | Your phone or tablet, SKF shaft alignment apps (iOS, Android) | Your phone or tablet, SKF shaft alignment apps (iOS, Android) |
| Distance between units | 0 to 7.3 in0 to 185 mm | 0.23 to 6.6 ft, 13.1 ft with extension cables0.07 to 2 m, 4 m with extension cables | 0.23 to 13.1 ft0.07 to 4 m | 0.23 to 16.4 ft0.07 to 5 m | 0.23 to 32.8 ft0.07 to 10 m | 0.23 to 32.8 ft0.07 to 10 m |
| Measuring error | 2% | 0.5% | 0.5% | 1% | 1% | 1% |
| Shaft rotation | 9, 12 and 3 o’clock positions | 9, 12 and 3 o’clock, 140° in all | Free, 90° in all | Free, 40° in all | Free, 40° in all | Free, 40° in all |
| Vertical machines | No | No | No | Yes | Yes | Yes |
| Machine trains | No | No | No | No | Yes, and spacer shafts | Yes, and spacer shafts |
| Shaft diameter | 0.8 to 6.3 in, 12.6 in with optional chains20 to 160 mm, 320 mm with optional chains | 0.8 to 5.9 in, 11.8 in with optional chains20 to 150 mm, 300 mm with optional chains | 0.8 to 5.9 in, 11.8 in with optional chains20 to 150 mm, 300 mm with optional chains | 0.8 to 5.9 in, 17.7 in with the chains in the kit20 to 150 mm, 450 mm with the chains in the kit | 0.8 to 5.9 in, 17.7 in with the chains in the kit20 to 150 mm, 450 mm with the chains in the kit | 0.8 to 5.9 in, 17.7 in with the chains in the kit20 to 150 mm, 450 mm with the chains in the kit |
| Battery | 18 h | Display unit 7 h, measuring units run on its cables | Display unit 8 h, measuring units up to 16 h | 10 h | 8 h, wireless charging pads | 8 h, wireless charging pads |
| Protection | IP54 | IP54 | IP54 | IP54 | IP67, measuring units and case | IP67, measuring units |
| Case and weight | 14.2 × 4.3 × 10.2 in, 4.67 lb360 × 110 × 260 mm, 2.12 kg | 20.9 × 4.3 × 14.2 in, 10.4 lb530 × 110 × 360 mm, 4.72 kg | 20.9 × 4.3 × 14.2 in, 10.4 lb530 × 110 × 360 mm, 4.72 kg | 14.2 × 4.3 × 10.2 in, 6.66 lb360 × 110 × 260 mm, 3.02 kg | 14.4 × 6.7 × 11.6 in, 9.55 lb365 × 170 × 295 mm, 4.33 kg | Trolley case 24 × 10.4 × 16.9 in, 27.3 lbTrolley case 610 × 265 × 430 mm, 12.4 kg |
| In the kit | Measuring unit, 3 reference bars, 2 shaft brackets with 480 mm chains and 80 mm rods, charging cable, measuring tape, calibration certificate, quick start guide, case | Measuring units M and S, display unit, 2 shaft brackets with 400 mm chains and 150 mm rods, chain tightening rod, power supply, 2 USB cables, measuring tape, calibration certificate, quick start guide, case | Measuring units M and S, display unit, 2 shaft brackets with 400 mm chains and 150 mm rods, 4 × 90 mm rods, chain tightening rod, power supply, 2 USB cables, 12 QR code stickers, measuring tape, calibration certificate, quick start guide, case | Measuring units M and S, 2 magnetic shaft brackets with 480 mm chains and 80 mm rods, 4 × 120 mm rods, 2 × 980 mm extension chains, charging cable, 12 QR code stickers, measuring tape, calibration certificate, quick start guide, case | Measuring units M and S, 2 magnetic shaft brackets with 480 mm chains and 80 mm rods, 4 × 120 mm rods, 2 × 1 m extension chains, 2 wireless charging pads, charging cable, measuring tape, calibration certificate, quick start guide, case | The TKSA 71 kit with 8 × 120 mm rods instead of 4, plus 2 magnetic bases, 2 sliding brackets, 2 × 50 mm offset brackets and a trolley case |
| Price |
$2,870.66 In stock |
$5,399.99 In stock |
$6,920.10 In stock |
$6,990.54 In stock |
$10,910.00 Sold out Ask about lead time |
$15,100.00 In stock |
Specifications as SKF publishes them on skf.com, checked October 2026.
See every SKF alignment toolAccessories
Accessories that fit the TKSA 31
Made by SKF for the TKSA 31. Tick what you need and add it with one click.
The TKSA 31 kit already holds 2 shaft brackets with 400 mm chains and 150 mm rods.
All SKF alignment tool accessoriesManuals & documents
SKF TKSA 31 manuals & documents
Data sheets, quick start guides and manuals from the manufacturer. They open in a new tab.
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Data sheet
Product data sheet TKSA 31 (opens in a new tab)
PDF · 119.3 KB
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Quick start guide
Quick start guide TKSA 31 (opens in a new tab)
PDF · 259.7 KB
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Manual
Instructions for use TKSA 31 (opens in a new tab)
PDF · 2.2 MB
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Brochure
Brochure Shaft alignment tools TKSA series (opens in a new tab)
PDF · 1.2 MB
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Safety data sheet
Safety data sheet (battery) TKSA 31 (580.2 KB) Download (firmware updates) (opens in a new tab)
PDF
About the brand
About SKF
Inventor of the self-aligning ball bearing and the spherical roller bearing.
SKF (AB Svenska Kullagerfabriken) was founded in Gothenburg, Sweden, on 16 February 1907, on one invention: the double-row self-aligning ball bearing of Sven Wingquist, a maintenance supervisor at a Gothenburg textile factory. The factory stood on clay, so the building moved, the line shafts fell out of alignment and the rigid ball bearings of the day overheated and failed. Wingquist's bearing let the shaft run out of line without shortening its service life.
SKF invented the spherical roller bearing in 1919 and launched the spherical roller thrust bearing in 1939, the CARB toroidal roller bearing in 1995 and SKF Explorer bearings in 1999. Explorer bearings have optimized internal designs and surfaces that reduce friction and heat and carry heavier loads, for a longer service life.
In 1926 an SKF subsidiary, AB Volvo, built a trial series of cars; the first Volvo rolled out in Gothenburg in 1927.
Genuine SKF product
Founded
1907
Headquarters
Gothenburg, Sweden
Employees (2025)
37,271
Present in
About 130 countries
Known for
- Self-aligning ball bearings
- Spherical roller bearings
- SKF Explorer bearings
- CARB toroidal roller bearings
- INSOCOAT and hybrid bearings
Disclaimer: Apollo Industries is not an authorized distributor, reseller, or representative of SKF. All SKF trademarks and product names are the property of their respective owners. We sell genuine SKF products purchased through independent channels.
FAQ
TKSA 31 questions & answers
TKSA 31 or TKSA 41?
Both use a red line laser with 29 mm CCD detectors, read to a 0.5% measuring error and come with SKF’s 5.6 in touch display unit. The TKSA 31’s measuring units connect by USB cable and sit up to 2 m apart, or 4 m with extension cables. The TKSA 41’s are wireless, sit up to 4 m apart, and add free measurement over a 90° turn of the shafts, a built-in camera and QR code reading for reports.
Does the TKSA 31 need a phone or tablet?
No. The TKSA 31 comes with SKF’s 5.6 in touch display unit in the kit.
Which SKF shaft alignment tool do I need?
Start from the distance and the machines. The TKSA 11 covers two horizontal machines close-coupled, with up to 185 mm between its brackets, on your own phone or tablet. The TKSA 31 (wired) and TKSA 41 (wireless) add a laser, SKF’s display unit and 2 m or 4 m between units. The TKSA 51 reaches 5 m and also aligns vertical machines. The TKSA 71 reaches 10 m and handles machine trains and spacer shafts.
What tolerance should I align to?
The machine maker’s tolerance comes first. Without one, SKF’s built-in table in the TKSA 31 and 41 allows, at the coupling: 0.10 mm offset and 0.08 mm/100 mm angle up to 2,000 rpm; 0.07 mm and 0.07 mm/100 mm to 3,000 rpm; 0.04 mm and 0.06 mm/100 mm to 4,000 rpm; 0.03 mm and 0.05 mm/100 mm to 6,000 rpm.
Does the TKSA 31 come calibrated?
Yes. The TKSA 31 ships with a calibration certificate that is valid for two years.
Which shims do I need?
SKF TMAS shims are pre-cut squares with the size and thickness marked on each one. The TMAS 50/KIT, 75/KIT and 100/KIT hold one size each (50, 75 or 100 mm) in thicknesses from 0.05 to 2.00 mm; the TMAS 340 holds 100 and 125 mm shims and the TMAS 380 50 and 75 mm. Pick the size that covers the machine’s foot.
Do you ship the TKSA 31 the same day?
In-stock orders placed by 3 PM EST ship the same day. All orders over $100 ship free by ground with code FREESHIP.
Can I get quantity pricing or buy tax-exempt?
Yes. Apollo offers special rates for businesses and bulk orders. Use Request a quote on this page or call (248) 429-9073.
Is this a genuine SKF TKSA 31?
Yes. Apollo Industries sells genuine SKF products, purchased through independent channels. Apollo is not an authorized distributor, reseller, or representative of SKF.
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