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The accuracy of rolling NSK bearings: scale accuracy and rotation accuracy. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
Scale accuracy (items related to the shaft and housing device): tolerances for inner diameter, outer diameter, width and installation width; tolerances for the diameter of the complex circle and the diameter of the outer complex circle in the roller group; the limit value of the chamfer scale; The width of the promised change.
Rotational accuracy (items related to the pulsation of the rotating body): the inner and outer rings allow radial runout and axial runout; the inner ring allows for lateral runout; the tolerance of the outer diameter slope is allowed; the thrust NSK bearing raceway thickness The allowable variation of the tapered hole; the tolerance of the tapered hole and the variation of the tolerance. The accuracy level of the NSK bearing has been standardized; it is divided into six levels: 0, 6X, 6, 5, 4, and 2. The accuracy is from 0. Progressively; with respect to the usual use level 0 has been met; but when used in the conditions or occasions shown in Table 1; the accuracy of level 5 or higher is required. The above accuracy level is formulated based on the ISO specification; The title is different in national norms.
First, the NSK bearing is used in detail for the applicable accuracy level:
Demand placement body with high jitter precision sound, impression machine spindle (recorder, recorder)
Radar, parabolic antenna rotating shaft machine tool spindle computer, disk spindle aluminum foil roll neck multi-stage rolling mill support bearing P4
P5, P4, P2, ABEC9
P5, P4, P2, ABEC9
P5
P4
High-speed rotary supercharger jet engine main shaft, auxiliary machine centrifugal separator LNG pump turbomolecular pump spindle, SKF bearing machine tool spindle tensioner P5, P4
P5, P4
P5, P4
P5
P5, P4
P5, P4, P2, ABEC9
P5, P4
Demand conflicts and conflicts change small control machines (synchronous motors, servo motors, gyro gimbals)
Measuring external machine tool spindle P4, ABMA 7P
P5
P5, P4, P2, ABEC9
Second, NSK imported bearing method applicable specifications applicable accuracy level:
Deep groove ball bearing GB307 0 grade - 6 grade 5 grade 4 grade 2 grade angular touch ball bearing 0 grade - 6 grade 5 grade 4 grade 2 grade self-aligning ball bearing 0 grade - - - - - Table 3
Cylindrical Roller Bearings 0 Grade - 6 Grade 5 Grade 4 Grade 2 Tapered Roller TIMKEN Bearings Metric Series (single row) GB307
SB/T53419-94
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Phosphor bronze is an alloy of Tin,phosphorus and Copper.It is corrosion-resisting,wear-resisting,tear-resisting.
Brass and Phosphor bronze are extensively used in sieving diversified pellet,powder,porcelain clay and glass,chinaware printing,filtering liquid and gas
We can manufacture Brass wire cloth 6 to 225 mesh, and Phosphor broze wire cloth from 6 to 500mesh. The following specification are listed for your reference.
NSK imported bearing accuracy grade common sense collection
Source: China Bearing Network Time: 2014-10-18