VARDHMAN BEARINGS
www.vardhmanbearings.com
www.arihantengineers.com
www.ranjanaarts.com
stiber bearings dealer stockiest manufacturer authorise dealer stiber germany
www.vardhmanbearings.com
What can industrial freewheels do ?RIV Company is the Egyptian agent of STIEBER GmbH, specialized in freewheels, freewheels are directional couplings, which means that the driving member rotates the driven member in one direction, while automatically disengaging itself from the driven member when the direction of rotation is reversed, the two operating states are:
Transmission of torque.
Idling (overrunning).
The freewheels may be employed as:
Overrunning clutch, the freewheel disengages automatically when the driven member rotates faster than the driving member.
Indexing clutch, the freewheel allows the conversion of reciprocating motion into rotational movement.
Backstop, the freewheel allows rotation in one direction only, it overruns continuously during operation, the freewheel prevents reverse rotation if the drive is disconnected. Two basic versions are available, the overrunning speed determines the selection of the appropriate model:
Grip-roller freewheels for low to medium overrunning speeds and for indexing clutches.
Sprag freewheels for high overrunning speeds and for backstops.
Installed in a drive system as an overrrunning clutch,they automatically disengage a faster-running driven part from a slowerdriving part.
APPLICATIONS
Ventilators
Standby drives shredders
Butcher machines
Rotary furnaces
Dry cleanning installations
Used as backstops, they automatically prevent unintentionalrotation opposite to the desired direction of drive, without having toapply external energy.
APPLICATIONS
Gear drives
Motors
Pumps
Elevators
Conveyors, cranes
Applied as indexing clutches, they transform reciprocalmotion into intermittent rotation.
APPLICATIONS
Printing machines
Packing machines
Sewing machines
Feeding mechanisns
Used as single revolution clutches, with exactnessand indexing accuracy, they enable coupling and disengagement of continuouslyrunning drives and periodically operated installations.
APPLICATIONS
Printing machines
Packing machines
Sewing machines
Feeding mechanisns
Locking elements
Locking Rollers
Individual spring compensates for machining tolerances. Therefore eachroller is loaded with the same torque. All rollers are instantly lockedwhen coupled.
Sprags
Compact sprag element easily integrated into a mechanismwhen used with hardened shaft and housing. Hight shaft overrunning speedspossible with correct lubrication.
Sprags centrifugally disengage from shaft during overrunning to becomenon-contact and non-wearing. Accepts high eccentricity and any type oflubricant. High shaft speeds possible with reduced lubrication.
Input
Input inner race
1 Outer race + n CW rotation, 2 Inner race- n CCW rotation, alpha clamp angle
Coupled + n1 < + n2 Overrunning n1 > n2
Coupled - n1 < - n2 Overrunning - n1 > - n2
Input outer race
1 Outer race + n CW rotation, 2 Inner race- n CCW rotation, alpha clamp angle
Coupled + n2 < + n1, Overrunning + n2 >+ n1
Coupled - n2 < - n1, Overrunning - n2 > - n1
Types
Types
ASK
CSK / CSK..P
CSK..2RS
GFK
Average overrunning speed [m/s]
Inner race overruns
12
12
12
12
Outer race overruns
12
12
12
8
Clamping element
Roller 1)
X
Sprag
X
X
X
Individually spring loaded
X
X
X
X
Cage
X
X
X
Bearing
Ball bearing
X
X
X
X
Operating mode
Overrunning clutch
X
X
X
X
Backstop
X
X
X
X
Indexing clutch
[X]
X
X&nbs p;
X
Types
ASK
CSK / CSK..P
CSK..2RS
GFK
Torque TkN [Nm]
60..210
2..260
2..140
37..365
Outer dimensions corresponding to ball bearing sizes
60
62
62 + 5 mm
59
Standard lubrication
Grease
X
X
X
X
Types
KI
AS
ASNU
AE
AA
NF
Average overrunning speed [m/s]
Inner race overruns
6
4,5
4,5
5
5
5
Outer race overruns
7
7
7
12
12
12
Clamping element
Roller 1)
X
X
X
X
X
X
Individually spring loaded
X
X
X
X
X
X
Cage
X
Bearing
None
X
X
X
X
X
X
Operating mode
Overrunning clutch
X
X
X
X
X
X
Backstop
X
X
X
X
X
X
Indexing clutch
[X]
X
X
X
X
X
Types
KI
AS
ASNU
AE
AA
NF
Torque TkN [Nm]
0,63..2,3
2..850
9..35600
13..4650
13..4650
16..35500
Outer dimensions corresponding to ball bearing sizes
62..
NU23..
Standard lubrication
Oil
X
X
X
X
X
X
Types
DC
Average overrunning speed [m/s]
Inner race overruns
12
Outer race overruns
8
Clamping element
Sprag
X
Individually spring loaded
X
Cage
Bearing
None
X
Operating mode
Overrunning clutch
X
Backstop
X
Indexing clutch
[X]
Types
DC
Torque TkN [Nm]
50..3840
Standard lubrication
Oil
X
Types
BAT
Average overrunning speed [m/s]
Inner race overruns
-
Outer race overruns
2
Clamping element
Roller
X
Cage
X
Bearing
None
X
Operating mode
Indexing clutch
X
Types
BAT
Torque TkN [Nm]
20..11500
Standard lubrication
Oil
X
Types
NFR
AV
RSBW
Average overrunning speed [m/s]
Inner race overruns
1,5
1,5
1,5
Outer race overruns
1,5
-
-
Clamping element
Roller 1)
X
X
Sprag
X
Indi vidually spring loaded
X
X
X
Cage
X
Bearing
Sleeve bearing
X
X
X
Operating mode
Overrunning clutch
X
Backstop
X
X
X
Indexing clutch
X
X
X
Types
NFR
AV
RSBW
Torque TkN [Nm]
16..150
220..8800
435..3900
Standard lubrication
Grease
X
X
Oil
X
Types
NFR
AL / ALP
GFR / GFRN
ALZ
Average overrunning speed [m/s]
Inner race overruns
5
5
5
5
Outer race overruns
12
15
15
15
Clamping element
Roller 1)
X
X
X
X
Individually spring loaded
X
X
X
X
Bearing
Ball bearing
X
X
X
X
Operating mode
Overrunning clutch
X
X
X
X
Backstop
X
X
X
X
Indexing clutch
[X]
X
X
X
Types
NFR
AL / ALP
GFR / GFRN
ALZ
Torque TkN [Nm]
200..27800
44..230000
44..56000
400..16000
Standard lubrication
Oil
X
X
X
X
Types
FSO
HPI
FSO
Average overrunning speed [m/s]
Inner race overruns
5,5 - 9
-
5,5 - 9
Outer race overruns
1,7 - 4,7
9 - 13,5
Clamping element
Sprag
X
X
X
Individually spring loaded
X
X
X
Cage
X
X
X
Bearing
Ball bearing
X
X
X
Operating mode
Overrunning clutch
X
X
Backstop
X
X
X
Indexing clutch
X
X
X
Types
FSO
HPI
FSO
Standard lubrication
Grease
X
X
X
Oil
< P>X
X
Types
CR
RSBF
RSBI / RBI
Average overrunning speed [m/s]
Inner race overruns
-
60
Outer race overruns
60
60
-
Clamping element
Sprag
X
X
X
Individually spring loaded
X
X
X
Cage
X
X
X
Bearing
None
X
X
X
Contact free overrunning
Internal
X
External
X
X
Operating mode
Overrunning clutch
[X]
Backstop
X
X
X
Types
FSO
HPI
FSO
Torque TkN [Nm]
180..2300
68..2450
120..42000
Standard lubrication
Oil
X
X
X
Types
RAZ / RANZ
RIZ / RINZ
Average overrunning speed [m/s]
Inner race overruns
-
20
Outer race overruns
20
-
Clamping element
Sprag
X
X
Individually spring loaded
X
X
Cage
X
X
Bearing
Ball bearing
X
X
Contact free overrunning
Internal
X
External
X
X
Operating mode
Overrunning clutch
[X]
[X]
Backstop
X
X
Types
RAZ / RANZ
RIZ / RINZ
Torque TkN [Nm]
50..16300
50..16300
Standard lubrication
Grease
X
X
Types
AL..G
ALB..M
Average overrunning speed [m/s]
Inner race overruns
-
3
Outer race overruns
24
-
Clamping element
Roller 1)
X
X
Individually spring loaded
X
X
Bearing
Ball bearing
X
X
Operating mode
Overr unning clutch
X
Backstop
X
Indexing clutch
[X]
Types
AL..G
AL..BM
Torque TkN [Nm]
44..56000
6850..240000
Standard lubrication
Oil
X
X
VARDHMAN BEARINGS
www.vardhmanbearings.com
www.arihantengineers.com
D-103, VASANT AISHWARIYA
MATHURADAS EXTN RD
OPP VORA COLONY
KANDIVALI WEST
MUMBAI
MAHARASHTRA
INDIA
TEL: 91-22-28627454
TEL/FAX: 91-22-28653894 , 28656188
CELL : 9819824531 , 9892432411
EMAIL : jigesh2007@hotmail.com
vardhmanbearings@rediffmail.com
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