A turned shaft comes off the lathe and goes to a bench of micrometers, a thread gage and a comparator, and the machine keeps cutting while someone works down the print. A Sylvac SCAN holds the part between centers, runs a camera along its shadow, and measures every diameter, length, angle and radius in one pass, with GO or NG on the screen before the next part is done.
Answer three questions about part size and the features you check. You'll get a starting model.
Start the fit guide →02 / AskDescribe the part, the features and the tolerance. The Fowler engineer who covers your region replies with a recommendation.
Ask an engineer →03 / Prove itSend sample parts and the print. We measure them on a SCAN and send you the results.
Request a part demo →Shafts, pins and screws get checked one feature at a time: a micrometer for the diameters, a height gage for the shoulders, a thread gage, and a comparator for the radii. Each gage needs its own setup and its own reading, and the lathe keeps cutting parts nobody has checked while the paperwork catches up.
Diameters, lengths, shoulders, chamfers, radii, angles and thread parameters all come from the same pass along the part. Sylvac puts a manual check with several gages at 10 to 30 minutes a part, and a SCAN at 30 to 60 seconds.
Nobody rocks a micrometer or lines up an edge by eye. The camera finds each edge in the shadow of the part, so the reading doesn't change with who is on shift or how hard they squeeze. We've deployed automated workstations that use a cobot to pick and load parts in the Sylvac SCANs...
A touch-screen panel and a status light show the result where the part was made. Temperature sensors and a reference standard built into the headstock let the SCAN check its own calibration, so it can sit on the shop floor instead of in the lab.
Every SCAN measures the same way. The model number tells you how big a part it takes and what it adds for threads and hidden features.
S25 measures parts up to Ø1.02″ (26 mm). S65, S76, S145 and S185 follow the same rule, up to Ø7.28″ (185 mm).
L roughly doubles the measuring length: 27.6″ (700 mm) on the S65L and S76L, 50.4″ (1280 mm) on the S145L and S185L. XL is the longest, 70.9″ (1800 mm) on the S145XL.
The optics tilt up to 30° to follow the helix, so the camera looks straight down the thread flank. Offered on the S25T, S65T, S65LT, S76T and S76LT. The S145 and S185 come with or without a tilt system.
The S145-P models add a Renishaw SP25M scanning probe for holes, slots, keyways and undercuts, measured in the same program as the optical features.
A SCAN earns its place where round parts get the same features checked over and over, or where the feature is too small or too fine to put a gage on.
Pitch, pitch diameter, major and minor diameter, flank angles and root and crest radius, on parallel and tapered threads.
Diameters, lengths, shoulders, chamfers and grooves on CNC-turned parts, all from one scan.
Runout, concentricity, roundness and cylindricity, with the headstock turning the part under the camera.
Custom thread forms and fine features on small medical parts, measured without touching them.
Splines, gears and turbine parts whose profile breaks up as the part turns.
Valve spools, pistons and fittings with tight diameters and seal grooves.
Up to 70.9″ (1800 mm) long and 220 lb (100 kg) on the S145XL.
Cross holes, keyways and undercuts with the SP25M touch probe on the S145-P models.
The first question picks the size class. The second picks the model by diameter and length. The third covers threads and hidden features.
Pick an answer above first.
Every SCAN measures from the shadow of the part, between centers or in a chuck. Pick the size by the largest diameter and longest part you check.
Built for screws, pins, implants and watch parts up to 7.9″ (200 mm) long. The S25T adds 30° tilting optics for threads.
See the S25T →
Built for shafts and turned parts up to 66 lb (30 kg), 13.8″ (350 mm) long or 27.6″ (700 mm) on the S65L. T and LT versions for threads.
Ask about the S65 →
The newest SCAN, with the S65's accuracy and features for parts up to Ø2.99″. 13.8″ or 27.6″ (350 or 700 mm) long, with T and LT versions.
Ask about the S76 →
Built for large and heavy parts up to 220 lb (100 kg): 24.2″ (615 mm) long, 50.4″ (1280 mm) on the S145L, 70.9″ (1800 mm) on the S145XL.
See the S145 →
The S145, S145L and S145XL with a Renishaw SP25M scanning probe for holes, slots and keyways in the same program.
See the S145-P →
Built for the largest diameters, Ø7.28″ × 50.4″ (Ø185 × 1280 mm), with or without tilt. Taking orders now for delivery from early 2027.
Ask about the S185L →| Model | S25 / S25T | S65 / S65T | S65L / S65LT | S76 / S76T | S76L / S76LT | S145 | S145L | S145XL | S185L |
|---|---|---|---|---|---|---|---|---|---|
| Diameter range (max Ø) | Ø1.02″ (26 mm) | Ø2.56″ (65 mm) | Ø2.56″ (65 mm) | Ø2.99″ (76 mm) | Ø2.99″ (76 mm) | Ø5.71″ (145 mm) | Ø5.71″ (145 mm) | Ø5.71″ (145 mm) | Ø7.28″ (185 mm) |
| Length range (max) | 7.9″ (200 mm) | 13.8″ (350 mm) | 27.6″ (700 mm) | 13.8″ (350 mm) | 27.6″ (700 mm) | 24.2″ (615 mm) | 50.4″ (1280 mm) | 70.9″ (1800 mm) | 50.4″ (1280 mm) |
| Holding capacity | Ø2.0″ × 7.9″ (Ø51 × 200 mm) | Ø7.9″ × 14.2″ (Ø200 × 360 mm) | Ø7.9″ × 28.0″ (Ø200 × 710 mm) | Ø7.9″ × 14.2″ (Ø200 × 360 mm) | Ø7.9″ × 28.0″ (Ø200 × 710 mm) | Ø10.0″ × 24.2″ (Ø254 × 615 mm) | Ø10.0″ × 50.4″ (Ø254 × 1280 mm) | Ø10.0″ × 70.9″ (Ø254 × 1800 mm) | Ø10.0″ × 50.4″ (Ø254 × 1280 mm) |
| Tilting optics for threads | 30° on the S25T | 30° on the S65T | 30° on the S65LT | 30° on the S76T | 30° on the S76LT | With or without, ask us | With or without, ask us | With or without, ask us | With or without, ask us |
| Max error, diameter | (0.9 + D/100) µm | (1 + D/100) µm | (1 + D/100) µm | (1 + D/100) µm | (1 + D/100) µm | (1.5 + D/100) µm | (1.5 + D/100) µm | (1.5 + D/100) µm | (1.5 + D/100) µm |
| Max error, length | (2.5 + L/200) µm | (3 + L/200) µm | (3 + L/200) µm | (3 + L/200) µm | (3 + L/200) µm | (4 + L/200) µm | (4 + L/200) µm | (4 + L/200) µm | (4 + L/200) µm |
| Repeatability (2σ), diameter / length | 0.5 / 0.8 µm | 0.5 / <1 µm | 0.5 / <1 µm | 0.5 / <1 µm | 0.5 / <1 µm | 0.5 / 1.0 µm | 0.5 / 1.0 µm | 0.5 / 1.0 µm | 0.5 / 1.0 µm |
| Resolution | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) | 0.000004″ (0.1 µm) |
| Axial speed | Up to 3.9″/s (100 mm/s) | Up to 6.3″/s (160 mm/s) | Up to 6.3″/s (160 mm/s) | Up to 6.3″/s (160 mm/s) | Up to 6.3″/s (160 mm/s) | Up to 6.3″/s (160 mm/s) | Up to 6.3″/s (160 mm/s) | Up to 6.3″/s (160 mm/s) | Up to 6.3″/s (160 mm/s) |
| Headstock | Precision rotary, sliding | Rotary, motorized tailstock | Rotary, motorized tailstock | Rotary, motorized tailstock | Rotary, motorized tailstock | Rotary, static and dynamic | Rotary, static and dynamic | Rotary, static and dynamic | Rotary, static and dynamic |
| Max part weight | 6.6 lb (3 kg) | 66 lb (30 kg) | 66 lb (30 kg) | 66 lb (30 kg) | 66 lb (30 kg) | 220 lb (100 kg) | 220 lb (100 kg) | 220 lb (100 kg) | 220 lb (100 kg) |
| Machine weight | 161 lb (73 kg) | 926 lb (420 kg) | 1,102 lb (500 kg) | 926 lb (420 kg) | 1,102 lb (500 kg) | 1,168 lb (530 kg) | 1,433 lb (650 kg) | 1,757 lb (797 kg) | Ask us |
| Software | Reflex SCAN+ | Reflex SCAN+ | Reflex SCAN+ | Reflex SCAN+ | Reflex SCAN+ | Reflex SCAN+ | Reflex SCAN+ | Reflex SCAN+ | Reflex SCAN+ |
Published Sylvac specifications. D and L are the measured diameter and length in mm, at 68 °F ± 1.8 °F (20 °C ± 1 °C). S185L figures are provisional; Sylvac lists delivery from the first quarter of 2027.
The -P models add a scanning probe to the S145 platform for holes, slots, keyways and undercuts. Probe points and optical features go into the same report.
| Model | S145-P | S145L-P | S145XL-P |
|---|---|---|---|
| Measuring range | Ø5.71″ × 24.2″ (Ø145 × 615 mm) | Ø5.71″ × 48.4″ (Ø145 × 1230 mm) | Ø5.71″ × 68.9″ (Ø145 × 1750 mm) |
| Holding capacity with probe | Ø7.9″ × 24.2″ (Ø200 × 615 mm) | Ø7.9″ × 50.4″ (Ø200 × 1280 mm) | Ø7.9″ × 70.9″ (Ø200 × 1800 mm) |
| Probe | Renishaw SP25M scanning probe | Renishaw SP25M scanning probe | Renishaw SP25M scanning probe |
| Probe travel, X | 24.2″ (615 mm) | 48.4″ (1230 mm) | 68.9″ (1750 mm) |
| Probe travel, Y | +2.36″ / -1.57″ (+60 / -40 mm) | +2.36″ / -1.57″ (+60 / -40 mm) | +2.36″ / -1.57″ (+60 / -40 mm) |
| Probe travel, Z | +5.12″ / -0.59″ (+130 / -15 mm) | +5.12″ / -0.59″ (+130 / -15 mm) | +5.12″ / -0.59″ (+130 / -15 mm) |
| Max error, diameter / length | (1.5 + D/100) / (4 + L/200) µm | (1.5 + D/100) / (4 + L/200) µm | (1.5 + D/100) / (4 + L/200) µm |
| Max part weight | 220 lb (100 kg) | 220 lb (100 kg) | 220 lb (100 kg) |
| Machine weight | 1,213 lb (550 kg) | 1,477 lb (670 kg) | 1,801 lb (817 kg) |
Published Sylvac specifications. Standard delivery includes the SM25-1 scanning module, two SH25-1 stylus holders and a Ø1.5 × 30 mm stylus.
A SCAN measures the outline of a round part the way a shadowgraph does, then does what a person at a comparator can't: it reads every edge along the full length, turns the part, and tilts to look down a thread.
This is how a run goes once the program exists. Writing the program is one scan of a good part.
Centers, a chuck or a magnetic plate hold the part. On the S65 and S76, the motorized tailstock closes with the clamping force you set.
Scan the barcode on the traveler, or let part recognition pick the program. The first part of a new job gets programmed by scanning a good one.
The camera runs the length of the part at up to 6.3″/s (160 mm/s), turning it for runout or tilting for threads where the program asks.
Every dimension is checked against its tolerance, and the status light shows the result at the machine.
Reports come from a drag-and-drop editor, with SPC on screen and export to CSV, XML or your SPC software. Sylvac Bluetooth gages can add bore readings to the same report.
SCAN questions get answered fastest with parts in hand. If you can't send any yet, describe the job and an application engineer will take it from there.
The print, the largest diameter and length, the features you can't measure well today, and how many parts you check per shift.
Ship sample parts to Fowler in Canton, Massachusetts, or set up a live video session with your parts on a SCAN.
You get the measurement results from your own parts and the model, tilt, probe and fixturing we'd quote for them.
Requests go to the Fowler application engineer who covers your state. Prefer the phone? Call (800) 788-2353.
Tell us about the parts, the features that give you trouble and how you want to see them measured. An application engineer replies with next steps.
The number is the largest diameter in millimeters: an S65 measures parts up to Ø2.56″ (65 mm). L is a longer measuring length and XL is the longest, 70.9″ (1800 mm) on the S145XL. T adds optics that tilt 30° for thread measurement. -P adds a Renishaw SP25M touch probe on the S145 platform.
For thread parameters like pitch diameter, flank angles and root radius, yes. A thread's flank leans at the helix angle, and the T models tilt the optics to match so the camera sees the true profile. If you only check major diameter and length on a threaded part, a straight model covers it.
The optics measure the outside profile. For holes, slots, keyways and undercuts, the S145-P, S145L-P and S145XL-P add a scanning touch probe in the same program. On other models, Sylvac Bluetooth bore gages, calipers and indicators can send their readings into the same SCAN report.
Resolution is 0.000004″ (0.1 µm) on every model. Maximum error is a formula that grows with the size of the feature, from (0.9 + D/100) µm on the S25 to (1.5 + D/100) µm on the S145 and S185L, with D in millimeters. Repeatability on diameter is 0.00002″ (0.5 µm) across the range. Full figures are in the specification table.
A comparator puts the magnified shadow on a screen in front of an operator, which suits profile work on flat and turned parts where seeing the whole outline helps. A SCAN is built for round parts: it reads the full length under a stored program, turns the part for runout and writes the report. If you're weighing both, an application engineer can walk you through them with your part.
It's built for the shop floor, with temperature compensation and a status light at the workstation. Sylvac offers an "Automation Ready" configuration across the range. With quick-release tooling, and the motorized tailstock on the S65 and S76, a robot can load and unload parts, and results can feed offsets back to the machine tool.
Yes. Send sample parts and the print, and we'll measure them on a SCAN and send back the results with a recommended model and fixturing.
Send samples and the print. You get the results from your own parts.
Request a demo →AskDescribe the job and get a recommendation from the engineer who covers your region.
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