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1, KOYO bearings can also be used grease to lubricate the grease should consider the following:
(1) bearing load, low speed, grease cone penetration, on the contrary to the cone penetration. Smaller selection of high-speed bearings cone penetration, good mechanical stability of grease. Of particular note is the lower the viscosity of the base oil of the grease.
(2) Select the grease drops generally higher than the operating temperature of 20-30 ° C, in the case of high-temperature continuous operation, be careful not to over grease allows the use of a temperature range.
(3) the KOYO bearing water washout or wet environment, good water resistance calcium-based, aluminum or lithium-based grease.
(4) selection of the grease has good adhesion.
KOYO bearing grease options:
Load <1 MPa, following the journal circumferential speed of 1m / s, the maximum operating temperature of 75 ° C, use calcium grease;
Load-6.5MPa, journal circumferential speed 0.5-5m / s, the maximum operating temperature of 55 ° C, selected No. 2 calcium grease;
The load> 6.5MPa, journal peripheral speed of 0.5m / s or less, the maximum operating temperature of 75 ° C use calcium grease;
Load <6.5MPa, journal circumferential speed 0.5-5m / s, the maximum operating temperature of 120 ° C, selected No. 2 lithium grease;
The load> 6.5MPa, journal peripheral speed of 0.5m / s or less, the maximum operating temperature of 110 ° C, selected No. 2 calcium - sodium grease;
Load-6.5MPa, the following journal circumferential speed of 1m / s, the maximum operating temperature of 50-100 ° C, selected No. 2 lithium grease;
The load> journal 5MPa peripheral speed of 0.5m / s, the maximum operating temperature of 60 ° C, selected No. 2 calender fat;
Conditions at 75-120 ° C in a humid environment, the temperature should consider the use of calcium - sodium grease grease. In a humid environment, the operating temperature is below 75 ℃, no calcium grease, also available aluminum grease. Operating temperature at 110-120 ℃, the available lithium grease or barium grease. Centralized lubrication consistency to be smaller.
KOYO bearings with grease lubrication cycle:
Casual work, unimportant parts: shaft speed 200r/min, the lubrication cycle 5 days; shaft speed 200r/min, lubrication cycle once every three days.
Relay Operation: shaft speed 200r/min, the lubrication cycle 2 days; shaft speed 200r/min, lubrication intervals of one day at a time.
Continuous work, the working temperature is less than 40 ° C: the shaft speed 200r/min, lubrication intervals of one day at a time; shaft speed 200r/min, lubrication cycle once per shift.
Continuous work, the working temperature of 40-100 ° C: shaft speed 200r/min, lubrication cycle once per shift; shaft speed 200r/min, lubrication cycle secondary class size.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 30322 NTN | 110 | 240 | 50 |
| 30330 NTN | 150 | 320 | 65 |