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  • Dimensions & Tolerances for Flat Keys & Keyways per JIS B 1301:1996
    When designing a drive system, the use of keys and keyways to transmit torque from the drive shaft to the gear/pulley/sprocket/coupling is common. Enclosed is a table detailing the standard metric keys and keyway sizes and their corresponding tolerances.
  • How to Use Inertia Figures for Gearbox Selection
    Overhung & thrust loads; Gearbox materials; Gearbox application; Grease Filling; Technical Data; Keyway sizes & tapping drill sizes; Inertia & use of inertia figures to aid selection
  • Sorting out shaft connections
    Motors and gearboxes that generate high torque and acceleration may make shaft keys obsolete. Designers should analyze stresses and backlash when weighing keyed versus keyless shafts. Stresses in the keyway are critical in evaluating the shaft's torque capacity. Opposing forces exerted by the shaft
  • Using a Stroboscope to Measure RPM
    of a shaft). Second, the object should have some unique part on it, like a bolt, keyway or imperfection to use as a reference point. If the object being viewed is perfectly symmetrical, then the user needs to mark the object with a piece of tape or paint in a single location only, to be used
  • How to Select a Strobe
    Best results for measuring RPM is for the user to fix his eyes on a single reference target a bolt head,. keyway, scratch on the shaft or to place a reference mark such as tape, paint or chalk on a symmetrical. object. When the user rotates the flash rate control knob "Very Slowly", the object
  • Tire Assemblies
    Problem: The tire assembly needs to be orientated so that the hub centerline is parallel to the centerline of the axle. There is a close fit between the hub ID and axle OD. The tire assembly must be rotated to align the hub key with the axle keyway. Thus, the tire assembly is lifted, pitched
  • Planetary reducers eliminate machining step to keep costs down
    A face-mount (MM7300SA) model in the NEMA-34 configuration (threaded holes in the reducer face and a 0.75-in.diameter, 1.5-in.-long shaft with a standard 0.1875-in. keyway). Other options include an offset shaft, mounting from the reducer side via through holes in the reducer flange, base mounting
  • Shaft Keys that Reduce Manufacturing Costs and Machine Downtime
    they want greater key depth than is possible with rectangular keys. , sometimes called flat keys, are general-purpose components for shafts between 1.0 and 20-in. diameter. Their width exceeds the height, letting them transmit more torque without adding slot depth to the shaft or keyway depth

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