A pitch diameter exceeding 1250 mm
b. A face width of 15 % of pitch diameter or larger; and
The number of teeth on a gear or sprocket is exactly proportional to the pitch diameter.
The pitch diameter is the point where little or no slippage occurs between the belt and the pulley.
Pitch Circle Diameter: 4,4 mm
The planet gear (131) has a pitch circle diameter that is 1/2 of the pitch circle diameter of the inner peripheral sun gear (102).
The pitch circle diameter PCDi of the conical rollers (4) is set smaller than the pitch circle diameter PCDo of the balls (3).
The balls define a joint pitch circle diameter (PCD).
The pitch circle diameter PCDo of a tapered roller (5) row on the outer side is larger than the pitch circle diameter PCDi of a tapered roller (6) row on the inner side.
The ratio (r1) (=PCDBALL/DBALL) of the pitch circle diameter (PCDBALL) of a torque transmission ball, and the diameter (ＤＢＡＬＬ) of the torque transmission ball is set to within the range of 3.0≤ r1≤3.3.
The diameter of the planet-wheel (16) and the diameter of the rolling circle of the crown (18) of the first stage (17) are larger than those of the second stage (5).
Furthermore, the radial gap of the radial ball bearing (14) is set not larger than o.2% of the diameter of the pitch circle.
The diameter of the reference circle gear-wheel (12) is twice that of the planetary gear-wheel (4).
The faceplate is spaced from the stepping motor and the diameter of the pitch circle is smaller than the diameter of the stepping motor, the output fibers diverging from the faceplate towards the motor and beyond in a space-saving arrangement.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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