NTN-SNR LINEAR AXIS AXC Series Manual page 44

Track roller guides of the series AXC and AXDL
We recommend a re-lubrication interval of 5,000 km or once a year. An oil with a kinematic viscosity of 460 mm² / s according to
DIN51562 at 40 ° C is to be used for re-lubrication.
Ball screws of the series AXC, AXF, AXDL and AXLT
Ball screws have the advantage of long travel distances without being re-lubricated. This means that a re-lubrication system can be
omitted in many cases.
To reach the longest possible re-lubrication interval, greases K2K according DIN 51825 and with higher loads KP2K with NLGI class
2 according DIN 51818 are prefered.
Greases containing solid additives (for example, graphite or MoS
However, since the lubricant manufacturers give no general guarantee for the service life time of their products, we recommend a
re-greasing interval depending on the screwe pitch even shown in Table 4.9 or annually.
The recommendations are applicable under the following conditions:
• Load ≤ 0,2 C
• Minimum number of revolutions 100 min-1
• Permanent temperature on the nut of the ball screw up to 60°C
• Maximum temperature on the nut of the ball screw 80°C
Table 4.9 ____ Re-greasing intervals of ball screws
Pitch [mm]
Re-greasing interval [km]
Trapezoidal screws of the series AXC, AXF, AXDL and AXLT
For trapezoidal screws, we recommend re-lubrication intervals of 10... 20 km. For the re- lubrication are mineral oil-based lithium soap
greases KP2-K according to DIN 51825 and NLGI class. 2 to use.
Greases containing solid additives (for example, graphite or MoS
Toothed rack of the series AXS
The rack and pinion drive is optimally supplied with lubricant by an
automatic lubricator DRIVE BOOSTER 120 in combination with a felt
rack-wheel. The system is filled with the grease SNR LUB HEAVY
DUTY. On delivery the emptying time of 12 months is settled. Only
if the specified kilometerage of Table 4.10 of one year is exceeded,
an emptying time of 6 months is to set. After this time, the lubricant
tank and the battery must be replaced.
In special circumstances the equipping of the Linear Axis with
greasing systems integrated in the machine control, different
lubricants or lubricant tank volumes are possible. In these cases,
the lubricant tank is according to a sample or to the serial number
and the battery set (not applicable for externally driven systems)
to specify.
For the determination of maintenance intervals, please contact our NTN-SN application engineers.
) shall not be used.
2
5 10 16
250 500 800
) can be used for trapezoidal screws.
2
Table 4.10 ___ Re-greasing intervals for toothed racks
Type
AXS120TH
AXS120TV
AXS200B
AXS200P
AXS200S
AXS230B
AXS240TH
AXS280B
AXS280P
AXS280 TH
AXS280TV
AXS460P
42
20 25 32
1000 1250 1600
Module
2
3
3
3
3
4
3
2
5
3
4
3
40 50
2000 2000
km / 120 cm³
80 000
64 000
32 000
32 000
32 000
24 000
64 000
40 000
24 000
64 000
48 000
32 000