Q1:In The Same Working Conditions Of The Same Type Of Rolling Bearing, Usually The Larger The Size, The Longer Its Life.

A:In the same type of rolling bearing under the same working conditions, the larger the size is, the longer the life is, is right, according to the pressure theorem, the smaller the contact surface is, the greater the pressure (pressure) is (such as jack), similarly, the small rolling bearing inside and outside the longitude is very small, the ball direct longitude is small, and the bearing inside and outside the contact surface is small, the greater the force it bears, It and the bearing inside and outside the friction force is also large; Large rolling bearing inside and outside by the increase, the ball by the increase and the number of direct, and the bearing inside and outside by the contact surface will increase, the ball to bear the force is reduced, it and the bearing inside and outside by the friction force is small, so high-power equipment with large bearings.

Q2:Method Of Using NJ Class Bearings

A:NJ cylindrical roller bearing, inner ring side with a guard, inner ring can be taken out from one direction
It is mainly used to withstand radial force, but also can withstand lighter one-way axial force.
If used as a floating end bearing, the flapper should be placed in the opposite direction of the floating direction,
(The shaft will lengthen or shorten due to thermal expansion and cold contraction, and the floating end bearing will lengthen or shorten the floating with the shaft)
If the shaft is cross-positioned with one NJ bearing at each end, the side with the flapper should be mounted opposite or opposite

Q3:What Kind Of Rolling Bearings Do Not Need Lubrication?

A:Deep groove ball bearings with dust cover or sealing ring on both sides have been filled with grease before delivery, so there is no need to add lubricating oil, there is no need to add. The sealing effect of deep groove ball bearing with dust cover on both sides is not as good as that of sealing ring, but it can support higher temperature and smaller starting moment. General deep groove ball bearings can work normally within 6000 RPM, good short time can reach 20000 RPM, general deep groove ball bearings use conditions within 4000 RPM, 120 degrees, more than 120 degrees to 200 degrees can replace the lubrication grease to meet this requirement, more than 250 degrees must use high temperature bearings. Deep groove ball bearings with dust cover on both sides are used in air conditioning.

Q4:What Type Of Bearing Does Worm Gear Use

A:Angular contact ball bearings can be used when the bearing capacity is slightly larger

In the case of large bearing capacity, tapered roller bearings can be used

In the case of large worm bearing span (480mm or more), you should use a combination configuration, such as one end with two face to face conical roller bearings, the other end with a cylindrical roller bearing (generally in the shaft extension end), more appropriate

Q5:How To Install Linear Bearings

A:1.Before installing the linear bearing, it is necessary to remove the raw edges, dirt and surface scars on the mechanical installation surface. Linear bearings are coated with anti-rust oil, please clean the base surface with cleaning oil before installation, usually the base surface is easy to rust after removing anti-rust oil, it is recommended to use lubricating oil to smear the spindle with low viscosity. 2. Gently place the linear bearing on the bed table, and use lateral fixing screws or other fixing fixtures to gently fit the line rail to the lateral mounting surface. Before installation and use, confirm whether the screw hole is consistent. Assuming that the processing hole of the base is not consistent and the bolt is forcibly locked, it will greatly affect the combination accuracy and quality of use.

Tighten the positioning screws of the linear bearing from the center to both sides in order to make the track fit with the vertical installation surface, and tighten the two ends from the central position to obtain more stable accuracy. After the vertical datum is tightened slightly, the locking force of the lateral datum is strengthened, so that the linear bearing can effectively fit the lateral datum.

Use torque wrench to lock torque one by one according to various materials, and tighten the positioning screw of linear bearing slide rail slowly.

Use the same installation method to install the secondary rail, and individually install the slide seat on the main rail and the secondary rail. Note that after the linear slide is installed on the slide seat, many subsequent accessories cannot be installed due to limited installation space, so all required accessories must be installed at this stage.

Gently place the mobile platform on the sliding seat of the main rail and the auxiliary rail of the linear bearing, and then lock the lateral pressing screw on the mobile platform, which can be completed after installation and positioning.