If a central lubrication system is to be used, a patented central lubrication adapter can be used to connect the standard roller stud of stud type track rollers with hexagonal sockets on both sides. This comprises a connection adapter with a hexagonal end and a rapid-fit connection cartridge.
Central lubrication adapter and funnel type lubrication nipple
1, Connection adapter with M10×1 internal thread
2, Rapid-fit connection cartridge
3, Fitting cylinder
4, Funnel type lubrication nipple
The connection adapter is connected to the roller stud on one end of the stud type track roller by replacing the funnel type lubrication nipple with the fitting cylinder. The hexagonal end prevents rotation of the adapter. The other end of the stud type track roller is closed off by means of the funnel type lubrication nipple.
The connection adapter has a M10×1 internal thread. This is used for screw mounting and sealing of the rapid-fit connection cartridge. The cartridge gives firm retention and sealing of the plastic tube. It is therefore no longer necessary to screw the pipe and adapter on to each other.
Dimensions of adapter
| Central lubrication adapter | W | L | l1 | l2 | l3 | For polyamide pipe DIN 73 378 |
|---|---|---|---|---|---|---|
| Designation | max. | approx. | d1×snom1) | |||
| AP8 | 8 | 27 | 16 | 22 | 4 | 4×0,75 |
| AP10 | 10 | 27 | 15 | 22 | 5 | 4×0,75 |
| AP14 | 14 | 25 | 8 | 20 | 6 | 4×0,75 |
Simplified calculation of relubrication intervals
The table Allocation to stud type track rollers shows the relubrication quantity for central lubrication using flowable grease and its conversion to the number of relubrication impulses for conventional metering nipple sizes.
The data are valid for a lithium soap flowable grease with EP additives and mineral oil base of classes ISO-VG 100 to ISO-VG 220 and NLGI classes 00 or 000.
Allocation to stud type track rollers
| Series1) | Outside diameter | Central lubrication adapter | Relubrication quantity | Relubrication impulses for metering nipple of size | ||
|---|---|---|---|---|---|---|
| D mm | Designation | g2) | 30 mm3 | 50 mm3 | ||
| NUKR, NUKRE | 35 and | 40 | AP8 | 1,1 | 40 | 24 |
| 47 and and | 52 | AP10 | 2,4 | 89 | 53 | |
| 62 to | 90 | AP14 | 7,3 | 271 | 163 | |
| KR, KRE | 35 and | 40 | AP8 | 1,2 | 44 | 27 |
| 47 and | 52 | AP10 | 1,6 | 60 | 36 | |
| 62 to | 90 | AP14 | 6 | 222 | 133 | |
| KRV, KRVE | 35 and | 40 | AP8 | 0,7 | 26 | 16 |
| 47 and | 52 | AP10 | 1 | 37 | 22 | |
| 62 to | 90 | AP14 | 3,2 | 120 | 72 | |
1, For stud type track rollers with hexagonal socket on both sides.
2, Relubrication quantity and relubrication intervals for central lubrication using flowable grease for the majority of applications. The quantity required to fill the feed lines must also be taken into consideration.
