Bearing cages: check every roller pocket under a large white opening panel light
The source monochrome image looks down on a thin ring-shaped bearing cage against a dark background, lit by a large white panel light. The ring is bright, and the evenly spaced roller pockets show as a fine row of marks all round it.
Make every pocket look alike first; a missing roller then breaks the pattern.
Manufacturer test image
- Light in sourceLS-BKL-1362 · white
- EvidenceManufacturer test image
- Imaging kitCamera and lens proposed; frame illustrative
- AcceptanceValidate on representative parts
Explore it in 3D
Profile frame (illustrative, not a catalog part)Light crossbeams (illustrative)CameraLensLightPartField of view
Camera and available lens CAD are published models. Lens and light envelopes use printed dimensions. The aluminium-profile gantry, its brackets and the work surface are generic illustrations, not catalog items. Light paths explain the arrangement and do not simulate optical performance. Representative part geometry is illustrative, not reconstructed inspection evidence. The specimen and lighting distance are representative, not dimensions or settings recovered from the source capture. The panel is drawn near the lens so the drawn viewing envelope passes through its 50 mm opening at the long working distance; this spacing is a proposal, not the source arrangement.
Lighting manufacturer's catalog test image
What the camera saw
Images from the manufacturer's application test, cropped; the original annotations are kept and nothing is generated or enhanced. Drag a comparison slider, or open any image full size.
The challenge
A cage carries many small rollers in identical pockets round a large, thin ring; one empty or doubled pocket is easy to miss by eye.
The whole ring must be imaged at once and lit evenly, so that every pocket looks alike wherever it sits on the circle.
How it was solved
The source identifies the white 350 × 350 mm panel light with a round centre opening for checking whether the rollers are present.
Look through the opening with the proposed monochrome camera, step round the ring and compare each pocket with its neighbours. The source does not name its camera, lens or software.
Why it works
- 1
A large panel close to the camera axis lights the flat ring from nearly the same direction everywhere, so the pockets repeat with the same brightness.
- 2
A regular pattern turns a missing or extra roller into a break in the repetition; the source gives no detection rate.
Lighting manufacturer's catalog test image
Evidence you can inspect
A complete thin ring fills most of the image; its roller pockets form an evenly spaced row of marks all round the circle.
The source captions the example as checking whether the rollers are present and identifies the white opening panel light.
One source capture. No cage size, roller count, cycle time or detection rate is supplied.
From image contrast to a production decision
What to validate on your part
- 01
Count the pockets
Record the nominal pocket count and check the image finds every pocket on good cages.
- 02
Seed faults
Include an empty pocket, a doubled or tilted roller and a cage that is off-centre in the field.
- 03
Check the whole circle
Confirm pockets at the field edge are as bright and sharp as those near the centre.
From the demo to your test bench
Parts in this setup
LightTested
LS-BKL-1362
350 x 350 mm Opening back light source (LS-BKL-1362)
White version of the 350 × 350 mm opening panel light identified in the source roller check. Printed overall 366 × 366 × 24 mm; the 50 mm round opening is given by the model code. The catalog lists red, green, blue and white variants; this trial selects white.
$1,209.00
In proposed setup
CameraOur pick
MV-CS050-10GM(NPOE)
Hikrobot MV-CS050-10GM(NPOE) 5 MP GigE area scan camera, IMX264, Gen 2 basic version, Mono, Without PoE
5 MP monochrome global-shutter camera proposed for a contrast trial. Confirm field, sampling, exposure and algorithm on the actual application.Not available in the United States. Available for delivery to other countries.
$819.00
In proposed setup
LensOur pick
LS-FFL-1454
16 mm, F2.8, 1.1", C-mount, Macro lens (52 mm (-0.25X) to 546 mm (-0.03X)) (LS-FFL-1454)
Proposed 16 mm C-mount macro lens at its printed 0.03x magnification / 546 mm working-distance pair. The proposed 2448 × 2048 sensor with 3.45 µm pixels gives a derived 281.52 × 235.52 mm field; confirm focus, coverage and residual distortion on the real sample. A cage wider than this field needs a longer distance or several images.
$319.00
In proposed setup
"Tested" marks the part the manufacturer used in its application test. "Our pick" is our proposed alternative or supporting part, not tested by the manufacturer in this set-up. Confirm colour, optics, controllers, power supplies, cables and mounting before ordering.
The set-up
| Tested light | LS-BKL-1362, white |
|---|---|
| Source camera / lens | Not specified in the source image caption; proposed parts below |
| Proposed lens point | 0.03x at 546 mm, printed lens pair |
| Derived proposed field | 281.52 × 235.52 mm = sensor dimensions / 0.03x; not a source test field |
| Luminous size (printed) | 350 × 350 mm |
| Panel envelope (printed) | 366 × 366 × 24 mm; 50 mm round opening (from the model code) |
| Source light position | Not supplied; the camera is shown looking through the opening |
| Mounting (proposed) | Aluminium-profile gantry built to suit, not a catalog item: two posts outside the panel and the viewing field, a camera crossbeam above and two light crossbeams beside the panel |
Mount the optics with intent
This panel light is too large for the catalog test stations' column clearance, so the 3D scene shows a generic aluminium-profile gantry instead: two posts outside the panel and the camera's field, a crossbeam the camera hangs from and two crossbeams that carry the panel. The gantry is an illustration of a frame to build or source to suit; it is not a catalog product and is not part of the quote. Profile sizes, joints, brackets and the work surface are schematic: confirm stiffness, camera and light fasteners and clearances before building.
Complete the electrical system
Select a controller against the exact light voltage, drive mode and power, then confirm camera data/power/I/O cables and a suitable PC. These are not silently added to the proposed optical kit.
Build this system
Start from this setup, adapt it to your part.
The configurator opens with this study's camera, lens, light and station picked. Swap any part, check fit and price, then buy or ask for a quote.
Camera and available lens CAD are published models. Lens and light envelopes use printed dimensions. The aluminium-profile gantry, its brackets and the work surface are generic illustrations, not catalog items. Light paths explain the arrangement and do not simulate optical performance. Representative part geometry is illustrative, not reconstructed inspection evidence. The specimen and lighting distance are representative, not dimensions or settings recovered from the source capture. The panel is drawn near the lens so the drawn viewing envelope passes through its 50 mm opening at the long working distance; this spacing is a proposal, not the source arrangement.
Metal parts and machining
Related case studies
Metal parts and machining
Bolt thread surface
Ring light turns the thread into regular bright bands, so damage shows as a break.Light in sourceLS-RNG-0801 · blueExplore the study
Metal parts and machining
Spring-window appearance in a clutch plate
Use the spring-window pattern for appearance and prove mechanical function separately.Light in sourceLS-BKL-1302 · whiteExplore the study
Metal parts and machining
Cross-hole position
Make the hole and tip the brightest features, then measure between them.Light in sourceLS-SPT-0178Explore the study
Make the next trial specific.
Tell us the part size, smallest defect or tolerance, available working distance, material and line speed. Include what a good part and a reject look like.
About this case study: the photos and camera images are the manufacturer's application test images, supplied by the maker of the tested part and taken on the parts shown; LumaSpec did not run this test. Your results depend on your part, camera and set-up. This is a manufacturer's application study, not a LumaSpec customer deployment. Reported figures are the manufacturer's; proposed components require a fresh trial. The 3D scene illustrates the arrangement and does not simulate imaging performance.