Eccentric cam followers feature an eccentric collar fixed to the stud, enabling easy positioning in the radial direction against the opposing track surface.

Cam and followerexamples

The feedback path between combinational circuit and memory elements(flip-flops) in a sequential circuit can produce instability if the outputs of memory elements are changing while the outputs of the combinational that go to flip-flop inputs are being sampled by the clock pulse.

Cam and followerDiagram

I am reading this book, "Digital Electronics & Computer Design - By M.M. Mano". While I was reading the Sequential logic and flip-flops, I found this:

Cam and FollowerVEX

If a clock pulse is given to the input of the flip flop at the same time when the output of the flip flop is changing, it may cause instability to the circuit.

Cam and followerin real life

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Miniature cam followers with thrust washers feature synthetic resin washers that handle axial loads generated by installation errors.

Easy mounting cam followers feature stepped processing on the stud. Stepped areas are secured from the top with a set screw for easy attachment.

Solid eccentric stud cam followers feature a stud designed with eccentricity, so that alignment is achieved when it is rotated.

Cam and followermechanism

C-Lube cam followers include a thermoset solid lubricant prepacked into the bearing space for long lasting, maintenance-free operation.

Cam and followerPDF

CR…BSE maintenance-free cam followers combine C-Lube technology with our newly developed ThrustDisk™ seals for exceptional contamination prevention.

Types ofcam and follower

Heavy duty cam followers are full complement roller bearings designed with a double row of cylindrical rollers built into the outer ring.

I tried to get my head around this but didn't come up with any idea that gets me peace. I'm confused especially with this "the outputs of memory elements are changing or when the output of the flip flop is changing. What does it mean? Because the output of a flip-flop will only change if there's a change applied on input signal. It will not change by itself.

Centralized lubrication cam followers feature one or two pipe-threaded holes in the stud. They are designed for applications where centralized oil supply piping is required.

It means that the input to flip flop must be stable for some amount of time before (setup time) and after (hold time) the clock edge. If the input is changing when there is a clock edge, it cannot sample it reliably as logic 1 or logic 0, and depending on what kind of paths the clock and data propagates inside the flip flop, there might be a short glitch on the output, or the inverting and non-inverting outputs could output same data while they should output complementary data.

The output of the flip flop will update to new state only after some propagation time, so if there is a feedback from flip flop output back to input, it means that the clock edges must not happen too rapidly, so that the output has been stable for enough time to satisfy the input setup time, and the flip flop output must not change too early to satisfy the input hold time as well.

IKO designs and manufactures a broad selection of cam followers to meet the diverse needs of applications including machine tools, industrial robots, electronic parts production and office automation equipment. A cam follower is a bearing that incorporates needle style rollers between a stud and a thick outer ring.

CR…VBS Series cam followers feature our proprietary ThrustDisk™ sealing technology along with a radial gap to alleviate impact loading.