Pulsafeeder Pulsalube 8 GS Ultra, Руководство по эксплуатации и техническому обслуживанию

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DRIVESYSTEMS
VL2 & VL3
EXTENDED BEARING LUBRICATION
RETAIN FOR FUTURE USE U10760 - 1 of 1
1. VL2 – Spread Bearing Design
NORD offers reinforced output shaft bearings with
increased bearing distance. The lower bearing is
a oversized, double row spherical bearing, which
absorbs high overhung and thrust loads while provid-
ing a longer bearing service life. The spherical roller
bearing is especially useful in compensating for align-
ment errors in long agitator shafts. The VL2 spread
bearing design is commonly used for shredders,
mixers, overhead conveyors or applications requiring
increased bearing load carrying capacities. Included
with the VL2 design is a grease fitting for the lower
bearing and a removable plug to allow excess grease to
purge from the bearing cavity.
Quadrilip™ Sealing System
Oil Slinger
Dry Cavity
Spherical
Roller Bearing
pp
Output
Flange
p
Grease Packed
Double Lip Seal
Sight
Tube
gg
Grease Fitting
C
Removable
Plug
www.nord.com/docs 04.14.15
NORD Gear Corporation
Toll Free in the United States: 888.314.6673
NORD Gear Limited
Toll Free in Canada: 800.668.4378
2. VL3 – Spread Bearing Design with Oil Safe Dry Cavity
The VL3 dry cavity design adds additional oil leak protective measures to the VL2 spread bearing design. NORD’s
Quadralip
TM
sealing system prevents oil from leaking from the gearbox into the VL2 flange. If in any case oil
does leak past the Quadralip
TM
seals, it would flow down to the oil slinger mounted onto the shaft. As the shaft
rotates, the oil will sling off into the dry cavity. A sight tube is provided for dry cavity inspection. At the bottom
of the spread bearing flange is greased packed, double lip seal.
3. Service Guidelines for the Extended Bearing Flange
The spherical roller bearing on the extended bearing housing should be re-greased with 0.75 to 1.0 ounces (20-25
grams) of grease after every 2,500 hours of service or at least every 6 months. Prior to re-greasing the screw plug
located opposite to the grease nipple should be unscrewed. After re-greasing the screw plug must be reinstalled
and tightened. The extended bearing is factory assembled with the proper amount and type of grease. The type
of grease supplied depends upon the type of oil specified at time of order.
Bearing Grease Options
Reducer Oil Type Grease Type Thickener Type NLGI Grade Ambient Temperature Range Manufacture Brand / Type
Mineral Standard Li-Complex NLGI 2 -30 to 60 ºC (-22 to 140 ºF) Mobil Grease XHP222
Synthetic High-Temperature Polyurea NLGI 2 -25 to 80 ºC (-13 to 176 ºF) Mobil / Polyrex EP 2
Food-Grade Food-Grade Al-Complex NLGI 2 -25 to 40 ºC (-13 to 104 ºF) Mobil / FM222
STOP
HARMFUL SITUATION
STOP
Grease compatibility depends upon the type of thickener or soap complex used, the base oil type
suspended within the thickener, and the type of additives used. The user should check with the
lubrication supplier before making substitutions in brand and type in order to assure compatibility and to
avoid causing possible damage to the extended bearing.
(VL3)
(VL3)