Turn the inner bearing race and track one ball in its cage pocket

Original, untested video brief. No input image or generated result is supplied.

1. Task and boundary

This shot distinguishes three simultaneous motions in a simple radial ball-bearing illustration. The outer race stays fixed. The inner race turns clockwise. The balls and cage orbit clockwise more slowly than the inner race, while the balls roll within their original pockets. One marked ball and its marked cage pocket provide a continuous identity check; they must travel together rather than the ball jumping into whichever pocket is nearest.

Use an idealized, lightly loaded front-view schematic with the bearing faces opened for observation. The task does not specify a numerical speed ratio, contact stress, lubrication regime or service life. Keep the movement to a small arc and make rolling visible with a simple ball marker. A ring of dots moving together is insufficient if the separate race, cage and ball roles cannot be distinguished.

2. Authorized first frame

Create your own original diagram or use a technical image you are authorized to adapt. Show concentric inner and outer races with a single circular row of widely spaced balls between them. Depict a thin cage with readable pockets, one per ball. Put a fixed notch on the outer race, a broad radial mark on the inner race and a colored mark beside one cage pocket. Place a short orientation line on the ball in that pocket.

Keep the bearing center, ball diameters, race spacing and visible contact regions clear in the initial view. Use a straight-on view so all balls remain visible without a hidden back half. This is an explicitly open schematic, not a claim that the inside of an opaque bearing can be photographed through metal. Avoid decorative labels over the pockets or reflections that resemble changing ball markers. Leave the same number of balls and pockets visible for the whole small motion.

3. Use the generator

Open the current image-to-video generator in a mode accepting your authorized first frame. Paste the complete prompt, check the available settings and cost estimate, then submit only when ready. This page supplies text; it does not upload an image or start a generation.

4. Prompt and timing

Use the supplied open front-view schematic. Keep the outer race, its notch, the bearing center and the camera stationary. Turn the original inner race clockwise through a modest angle. Let the original cage and ball centers orbit clockwise about the same center, slower than the inner race. Keep every ball in its original cage pocket and maintain the original spacing between neighboring balls. In this idealized view with the outer race fixed, show the balls rolling counterclockwise about their own centers as they orbit clockwise. Keep the marked ball orientation line attached to that ball and the pocket mark attached to the cage. Preserve ball size and contact with both race surfaces, without slipping through a solid ring, swapping pockets or turning the outer race. Ease the connected motion to a stop and hold the same assembly, with no exploded view or new components.

Opening: identify the outer notch, inner radial mark, marked cage pocket and marked ball orientation line before the inner race begins turning.
Middle: compare the faster clockwise inner-race mark with the slower clockwise cage mark, while separately following the marked ball rotation inside its moving pocket.
Ending: stop after a small orbital arc, keeping every original ball paired with its pocket and the outer notch in the same screen position. Retain a clear settled front view.

These beats are author suggestions, not exact model timing guarantees. Adapt their proportions to the clip length actually available.

5. Inspect the output

After inspecting your own output, record a time or frame, visible observation and pass, fail or inconclusive judgment for each condition. A convincing ending alone does not verify the preceding action.

The outer race and bearing center remain fixed, while the inner race turns clockwise without changing its circular shape or concentric placement.
The cage and ball centers orbit clockwise more slowly than the inner race in the requested illustrative motion.
The marked ball remains in the same marked cage pocket, and neighboring ball order and the number of pockets stay unchanged.
The ball orientation marker rotates with the ball rather than being repainted in one screen position; the requested rolling direction is counterclockwise in this front view.
The balls keep their sizes and remain between both race surfaces without penetrating a ring, leaving a contact gap or becoming a fused rotating band.
If the cage mark, ball orientation line or race contacts are obscured, record inconclusive; common orbital movement alone does not verify rolling and pocket identity.

6. Fix one failure

If all three rings rotate as one disk, emphasize the stationary outer notch and the distinct inner-race and cage markers. Reduce the number of visual decorations.
If balls exchange pockets, slow the motion and enlarge the single marked ball-pocket pair. Keep its two neighbors visible throughout the short arc.
If the balls orbit without readable rolling, use an original schematic with a larger orientation line. Do not count unmarked circular dots as evidence of spin.
If the cage outruns the inner race, remove generic fast-spinning language and state the qualitative slower cage motion without adding a numerical ratio.
If the races change spacing, use a clearer concentric drawing with uniform ball size. Inspect the contact boundaries after changing one instruction rather than trusting a smooth overall animation.

7. Ending and limits

The endpoint preserves the original bearing assembly after a small advance. The marked ball has moved with its original pocket, the inner mark has advanced farther and the outer notch has not moved. These visible relationships define the requested illustration; they do not establish that a manufactured bearing would carry a load or meet a tolerance.

Save your own generated result through the available result controls, together with the authorized input, exact prompt, settings and inspection notes.

No generated example, engineering simulation, measured speed ratio or bearing test is supplied. Idealized rolling cues can be imitated without consistent contact mechanics. Record uncertain contact or unreadable spin explicitly, and avoid presenting a visually successful clip as a validation of bearing design. Save the authorized schematic, actual prompt and observations of each moving part.

The rolling-cylinder task couples a cylinder moving across a surface with its own rotation. Here ball centers orbit within fixed concentric constraints, between a stationary outer race and moving inner race, while a cage preserves pocket identity. The added race and cage relations make this different from a single object rolling on a floor.