Quick take for the route
This E2EC-CR5B1 5M is a shielded inductive prox with a 0.5 mm sensing distance — tight enough to spot a bearing race wobble on a cam follower, but you won't use it for long-range presence. PNP-NO, 3-wire, cable leads. Body is nickel-plated brass, sealed to IP64, so out here in the grease it'll handle coolant splash and dust, but don't dunk it.
What the ratings mean for fit
0.5 mm sensing distance; shielded design allows flush mounting. Supply 4.75–30 V, response 1 kHz, operating range -25 to 70 °C.