S Serisi Çelik / Bronz - Bakım Gerektiren
Çelik, taşlanmış dış çap. Mafsal yatak, dış muhafazaya preslenmiş.
İnceleThe selection and determination of spherical bearing and rod end sizes in Schedule K must be based on the specified load capacity, applied loads and requirements for useful life and operating safety. The load ratings specified in the tables serve as definitive characteristic and arithmetic values for the load capacity of the spherical bearings an rod ends.
Load ratings from different manufacturers cannot always be compared with each other, since no standardised load rating definition exists for spherical bearings an rod ends. The following conditions are used as a basis for the load ratings of Askubal heavy-duty spherical bearings and rod ends:
Static load capacity C0 (plain bearings)
The static load capacity C0 is the radially acting static load which does not cause any permanent deformation of the components when the spherical bearing or rod end is stationary, i.e. the load condition without pivoting, swivelling or tilting movements. It is also a precondition here that the operating temperature must be in the normal room temperature range and the surrounding components must possess sufficient stability. The static load capacity may vary by lower or higher temperature according to the material.
Static load capacity C0 (roller bearings)
In the case of Askurol rod ends with roller bearings, the static load rating is the load at which the overall permanent deformation of rolling elements and raceways is max. 0.0001 of the rolling element diameter.
Dynamic load capacity C (plain bearings)
Dynamic load ratings serve as arithmetic values for calculation of the service life of dynamically-loaded spherical bearings and rod ends. The values themselves do not provide any information about the effective dynamic load capacity of the spherical bearing or rod end. To obtain this information, it is necessary to take into account the additional influencing factors such as load type, swivel or tilt angle, speed characteristic, max. permitted bearing clearance, max. permitted bearing friction, lubrication conditions and temperature, etc.
Dynamic load capacities depend on the definition used to calculate them. Comparison of values is not always possible owing to the different definitions used by various manufacturers, and because the load capacities are often determined under completely different test conditions.
Dynamic load capacity C (roller bearings)
In the case of Askurol rod ends with roller bearings, the dynamic load capacity is the load at which 90% of a large quantity of identical rod ends reach 1 million revolutions before they fail owing to fatigue of the rolling surfaces.
Operating temperature
All Askubal spherical bearings and rod ends can be used without restriction in an operating temperature range of between -10 °C bis +80 °C. Different operating temperatures occur a decrease of load capacity of the rod end housing and the bearing therefore the useful life will be reduced too.
Rod end selection
When choosing a rod end be sure that the real load is allways explicitly less than the maximum load capacity of the rod end.
Spherical bearings to DIN ISO 12240-1, Dimension Series K
Bearing bore | Mating materials steel on high-duty bronze | Mating | materials steel on PTFE | ||||||||||
d | C2* | normal | C3* | C2* | normal | C3* | |||||||
over | incl. | min | max | min | max | min | max | min | max | min | max | min | max |
mm | mm | ||||||||||||
3 | 6 | 4 | 34 | 10 | 50 | 42 | 72 | 5 | 30 | 20 | 50 | 40 | 65 |
8 | 10 | 5 | 41 | 13 | 61 | 52 | 88 | 10 | 50 | 40 | 80 | 70 | 100 |
12 | 18 | 6 | 49 | 16 | 75 | 64 | 107 | 15 | 60 | 50 | 100 | 90 | 130 |
20 | 30 | 7 | 59 | 20 | 92 | 77 | 120 | 30 | 70 | 60 | 110 | 100 | 140 |
35 | 50 | 9 | 71 | 25 | 112 | 98 | 150 | 40 | 80 | 70 | 140 | 130 | 180 |
Spherical bearing to DIN ISO 12240-1, Dimension Series E
Bearing bore | Mating materials steel on steel | Mating | materials steel on PTFE | ||||||||||
d | C2* | normal | C3* | C2* | normal | C3* | |||||||
over | incl. | min | max | min | max | min | max | min | max | min | max | min | max |
mm | mm | ||||||||||||
2,5 | 12 | 8 | 32 | 32 | 68 | 68 | 104 | 0 | 25 | 0 | 32 | 15 | 45 |
12 | 20 | 10 | 40 | 40 | 82 | 82 | 124 | 0 | 30 | 0 | 40 | 20 | 60 |
20 | 35 | 12 | 50 | 50 | 100 | 100 | 150 | 0 | 35 | 0 | 50 | 25 | 65 |
35 | 60 | 15 | 60 | 60 | 120 | 120 | 180 | 0 | 40 | 0 | 60 | 30 | 80 |
60 | 90 | 18 | 72 | 72 | 142 | 142 | 212 | 0 | 50 | 0 | 72 | 35 | 90 |
90 | 140 | 18 | 85 | 85 | 165 | 165 | 245 | 0 | 60 | 0 | 85 | 40 | 100 |
Spherical bearing to DIN ISO 12240-1, Dimension Series G
Bearing bore | Mating materials steel on steel | ||||||
d | C2* | normal | C3* | ||||
over | incl. | min | max | min | max | min | max |
mm | mm | ||||||
2.5 | 10 | 8 | 32 | 32 | 68 | 68 | 104 |
10 | 17 | 10 | 40 | 40 | 82 | 82 | 124 |
17 | 30 | 12 | 50 | 50 | 100 | 100 | 150 |
30 | 50 | 15 | 60 | 60 | 120 | 120 | 180 |
50 | 80 | 18 | 72 | 72 | 142 | 142 | 212 |
80 | 120 | 18 | 85 | 85 | 165 | 165 | 245 |
Spherical bearing to DIN ISO 12240-1, Dimension Series W
Bearing bore | Mating materials steel on steel | ||||||
d | C2* | normal | C3* | ||||
over | incl. | min | max | min | max | min | max |
mm | mm | ||||||
2.5 | 12 | 8 | 32 | 32 | 68 | 68 | 104 |
12 | 20 | 10 | 40 | 40 | 82 | 82 | 124 |
20 | 32 | 12 | 50 | 50 | 100 | 100 | 150 |
32 | 50 | 15 | 60 | 60 | 120 | 120 | 180 |
50 | 90 | 18 | 72 | 72 | 142 | 142 | 212 |
90 | 125 | 18 | 85 | 85 | 165 | 165 | 245 |
*) on request
Rod ends to DIN ISO 12240-4, Dimension Series K
Bearing bore | Mating materials steel on high-duty bronze | Mating materials steel on PTFE | |||||||
d | normal | C3* | normal | C3* | |||||
over | incl. | min | max | min | max | min | max | min | max |
mm | |||||||||
3 | 6 | 2 | 34 | 12 | 65 | 3 | 35 | 10 | 50 |
8 | 10 | 3 | 41 | 20 | 78 | 5 | 40 | 15 | 55 |
12 | 18 | 3 | 49 | 25 | 93 | 5 | 45 | 15 | 65 |
20 | 30 | 4 | 59 | 30 | 103 | 10 | 55 | 20 | 75 |
35 | 50 | 5 | 71 | 35 | 125 | 10 | 60 | 20 | 80 |
Rod ends to DIN ISO 12240-4, Dimension Series E
Bearing bore | Mating materials steel on steel | Mating materials steel on PTFE | |||||||
d | normal | C3* | normal | C3* | |||||
over | incl. | min | max | min | max | min | max | min | max |
mm | |||||||||
2.5 | 12 | 16 | 68 | 34 | 104 | 0 | 25 | 10 | 40 |
12 | 20 | 20 | 82 | 41 | 124 | 0 | 30 | 10 | 55 |
20 | 35 | 25 | 100 | 50 | 150 | 0 | 35 | 15 | 60 |
Rod ends on antifriction bearing basis, mounting sizes to DIN ISO 12240-4
Bearing bore | Ball bearing | Roller bearing | |||||||||||
d | C2* | normal | C3* | C2* | normal | C3* | |||||||
over mm | incl.30 | minmm 5 | max30 | min15 | max40 | min35 | max50 | min10 | max30 | min20 | max50 | min45 | max60 |