Please select lubricated or IKO non-lubricated spherical plain bearings considering load conditions, lubrication conditions, temperature, sliding speed, etc. Load capacity 1 Dynamic load capacity The dynamic load capacity Cd is the maximum load that the bearing can tolerate during oscillating motion. The maximum allowable load is basically calculated based on the contact surface pressure of the joint portion. Dynamic load capacity is used to calculate bearing life. The recommended value of the bearing load relative to the dynamic load capacity Cd varies depending on the bearing type and load conditions, but the values u200bu200bin Table 9 can be used as a guideline for selection. Table 9 Recommended value of working load Bearing type Oil-filled spherical plain bearing Non-oiled spherical plain bearing≤0.3Cd≤Cd≤0.6Cd≤0.5Cd Equipment Co., Ltd. inquiries. The dynamic load capacity Cdt, which takes into account the influence of bearing temperature, can be obtained from the following formula using the temperature coefficient. fCdtu003dft Cd (1) where Cdt: dynamic load capacity considering temperature rise factor N ft: temperature coefficient (refer to Table 10) Cd: dynamic load capacity N. Static load capacity 

The static load capacity Cs refers to the maximum static load that the bearing can carry under the condition that the inner ring or outer ring is not damaged or permanent deformation that makes it impossible to operate does not occur. When the load load of the bearing is close to the static load capacity, the stress acting on the shaft or the housing reaches the limit and must be paid attention to. Equivalent radial load spherical plain bearings are bearings that can withstand radial and axial loads at the same time. If the magnitude and direction of these loads are constant, the equivalent radial load can be calculated from the following formula. Pu003dFr + YFa (2) where P: Equivalent radial load N Fr: Radial load N Fa: Axial load N Y: Axial load factor. 

IKO bearings life The life of a spherical plain bearing is expressed by the total number of oscillations until it fails to work properly due to wear of the sliding contact surfaces, resulting in an increase in internal clearance, an increase in friction torque, and an increase in bearing temperature. Since the bearing life is affected by various factors such as the material, load direction, size, lubrication conditions, and sliding speed of the sliding contact parts, the calculated life value can be used as a practical value based on experience. The life of the oiled iko spherical bearings [1] Check whether the pV value is within the allowable range of the pV curve shown in Figure 1, to determine whether to use the calculation formula for the life of the oiled spherical plain bearing. If it is used beyond this range, please consult Qingdao Ruijing Electromechanical Equipment Co., Ltd. The values u200bu200bof the contact surface pressure p and the sliding velocity V are calculated by the following formulas. pu003d100P (3) Cdt Vu003d5.8210-4dkβf (4) where p: contact surface pressure N/mm2 P: equivalent radial load N Cdt: dynamic load considering temperature rise Capacity N (refer to formula (1)) V: sliding speed mm/sdk: ball diameter mm 2β: swing angle (refer to Fig. 2) βu003d5 when β＜5 βu003d90 when rotating f : per minute Number of swings min-1. [2] Bearing life The life of IKO oil-filled spherical plain bearings is calculated according to the following formula. Gu003d3.18b1b2b3 Cdt 105 (5)dkβ P Lhu003dG(6)60 where G: life (total number of oscillations) b1: load direction coefficient b2: lubrication coefficient Cdt: Dynamic load capacity N considering temperature rise factor (see formula (1)) P: Equivalent radial load N Lh: Life time hf: Number of oscillations per minute min-1. The life of the non-lubricated wholesale radial spherical plain bearing non-standard [1] Confirm the pV value to confirm whether it is within the allowable range of the pV curve shown in Figure 4, to judge whether to use the calculation formula for the life of the non-lubricated spherical plain bearing. If it exceeds this Please consult Qingdao Ruijing Electromechanical Equipment Co., Ltd. for the range of use. The contact surface pressure p and sliding speed V are calculated according to formulas (3) and (4) on page 447.

Bearing life life of oil-free spherical iko plain bearing In order to obtain the total sliding distance S when the contact surface pressure p is obtained using the formula (3) using Fig. 5, the total number of oscillations and the life time are calculated according to the following formula. G u003d 16.67b1Sf (7)VLh u003dG(8) 60f where G: Life (total number of oscillations) b1: Load direction coefficient S: Total sliding distance m (see Figure 5) f: Number of oscillations per minute min-1 V: Sliding speed mm/s Lh: life time h.