Page 246 - Rollingbearings

1 Deep groove ball bearings
Contact seals (designation sufixes RSH, Bearings with illing slots
1 RSH2, RS1, RS1/VP311 or RS2) • consist of a 62 series deep groove ball
bearing and an SKF WAVE seal (ig. 11): • high temperature grease GJN
• are made of sheet steel reinforced – single lip, spring loaded radial shaft seal
– NBR – made of NBR On request, bearings can be supplied with
– FKM (designation sufix RS2 or RSH2, • have limiting speeds quoted in the product the following special greases:
available on request) table that are based on the permissible
– food compatible, blue-coloured NBR * circumferential speed for the seal (14 m/s) • wide temperature range grease HT or WT
(designation sufix VP311 and for stain- • wide temperature range and low-noise
less steel bearings only) grease LHT23
• are available in different designs depend- Greases for capped bearings • low temperature grease LT
ing on the bearing they are used with
(ig. 10): Bearings capped on both sides are lubricated The technical speciications of the various
– for 60, 62 and 63 series bearings in two for the life of the bearing and are virtually greases are listed in table 3
RSH designs (a, b), depending on the maintenance-free The standard grease is not identiied in
size They are illed with one of the following the bearing designation (no designation suf-
– for RS1 designs, with sealing either greases: ix) Special greases are indicated by the cor-
against the inner ring shoulder (c) or responding grease sufix Check availability
against a recess in the inner ring side Single row bearings of bearings with special grease prior to
face for chromium steel bearings (d) or • standard bearings (table 2) ordering
for stainless steel bearings (e), the rele-
vant design is determined by dimension On request, bearings can be supplied with
d or d in the product table the following special greases:
2
1
ICOS oil sealed bearing units • high temperature grease GJN
• are typically used for applications with • wide temperature range grease HT or WT
sealing requirements exceeding the cap- • wide temperature range and low-noise
abilities of standard sealing solutions, i e grease LHT23
oil retention • low temperature grease LT
• have the following features compared to
bearings with external sealing solutions: Stainless steel bearings
– need less axial space • wide temperature range and low-noise  WARNING
– simplify mounting grease LHT23 as standard Seals made of FKM (luoro rubber)
– avoid expensive machining of the shaft • GFJ food-grade grease, registered by NSF exposed to an open lame or tempera-
because the inner ring shoulder is the as category H1 (designation sufix VP311) tures above 300 °C (570 °F) are a health
seal counterface The NSF registration conirms the and environmental hazard! They remain
grease fulils the requirements listed in the dangerous even after they have cooled
US Food and Drug Administration’s guide- Read and follow the safety precau-
lines under 21 CFR section 178 3570 tions on page 197
* The material is FDA and EC approved FDA (lubricant acceptable with incidental food
approval is based on compliance with CFR 21 contact for use in and around food pro-
section 177 2600 “Rubber articles intented for
repeated use” for use in contact with aqueous cessing areas)
and fatty foods EC approval is based on compli- • available on request: special non-toxic
ance with the overall migration requirements of
the German BfR recomenndation XXI for cat- grease, registered by NSF as category H1
egory 3 materials (designation sufix VT378)

Fig. 10 Fig. 11
Contact seals ICOS oil sealed bearing unit

a b c d e

RSH RSH RS1 RS1 RS1
RSH
RSH
D ≤ 25 mm D > 25 mm
D ≤ 25 mm
D > 25 mm
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