S7110

S7110
RINGFEDER
®
Low Profile Locking Assembly™
RfN 7110
W-7110
RfN 7110
METRIC SERIES 7110
SIZE
d
D
INCH SERIES 7110
SIZE
d
D
inches
T
d2
d1
Dimensions
L2
0.001
1.063
1.024
0.472
0.866
1.024
1.181
0.001
1.102
1.102
0.551
0.906
1.063
1.220
0.001
1.102
1.102
0.551
0.906
1.063
1.220
L1
L
Ltot
inches
8 x 15
0.315
0.591
9 x 16
0.354
0.630
10 x 16
0.394
0.630
11 x 18
0.433
0.709
0.001
1.260
1.181
0.551
0.906
1.063
1.220
12 x 18
0.472
0.709
0.001
1.260
1.181
0.551
0.906
1.063
1.220
13 x 23
0.512
0.906
0.001
1.496
1.378
0.551
0.906
1.063
1.220
14 X 23
0.551
0.906
0.001
1.496
1.378
0.551
0.906
1.063
1.220
15 x 24
0.591
0.945
0.001
1.732
1.575
0.630
1.142
1.417
1.654
16 x 24
0.630
0.945
0.001
1.732
1.575
0.630
1.142
1.417
1.654
17 x 26
0.669
1.024
0.001
1.850
1.654
0.709
1.220
1.496
1.732
18 x 26
0.709
1.024
0.001
1.850
1.654
0.709
1.220
1.496
1.732
19 x 27
0.748
1.063
0.001
1.890
1.693
0.709
1.220
1.496
1.732
20 x 28
0.787
1.102
0.001
1.929
1.732
0.709
1.220
1.496
1.732
22 x 32
0.866
1.260
0.001
2.087
1.890
0.984
1.496
1.772
2.008
24 x 34
0.945
1.339
0.001
2.165
1.969
0.984
1.496
1.772
2.008
25 x 34
0.984
1.339
0.001
2.165
1.969
0.984
1.496
1.772
2.008
28 x 39
1.102
1.535
0.001
2.362
2.165
0.984
1.496
1.772
2.008
30 x 41
1.181
1.614
0.0015
2.441
2.244
0.984
1.496
1.772
2.008
32 x 43
1.260
1.693
0.0015
2.520
2.323
1.181
1.693
1.969
2.205
35 x 47
1.378
1.850
38 x 50
1.496
1.969
40 x 53
1.575
42 x 55
3/8
7/16
3/4
7/8
1
1-1/4
0.375
0.437
0.750
0.875
1.000
1.250
0.630
0.709
1.063
1.260
1.339
1.614
0.0015
2.677
2.480
1.181
1.693
1.969
2.205
0.0015
2.795
2.598
1.181
1.693
1.969
2.205
2.087
0.0015
2.913
2.717
1.260
1.772
2.047
2.283
1.654
2.165
0.0015
3.031
2.795
1.260
1.772
2.047
2.283
45 x 59
1.772
2.323
0.0015
3.346
3.110
1.575
2.205
2.520
2.835
48 x 62
1.890
2.441
1-15/16
1.937
2.441
0.0015
3.425
3.228
1.575
2.205
2.520
2.835
50 x 65
1.969
2.559
2
2.000
2.559
0.0020
3.583
3.346
1.969
2.958
2.913
3.228
55 x 71
2.165
2.795
0.0020
3.858
3.583
1.969
2.598
2.913
3.228
60 x 77
2.362
3.031
2-3/8
2.375
3.031
0.0020
4.055
3.819
1.969
2.598
2.913
3.228
65 x 84
2.559
3.307
2-5/8
2.625
3.307
0.0020
4.331
4.094
1.969
2.598
2.913
3.228
70 x 90
2.756
3.543
0.0020
4.685
4.488
2.362
3.150
3.583
3.976
75 x 95
2.953
3.740
0.0020
4.961
-
2.559
3.386
3.780
4.173
80 x 100
3.150
3.937
0.0020
5.157
-
2.559
3.386
3.780
4.173
85 x 106
3.346
4.173
0.0020
5.394
-
2.559
3.386
3.780
4.173
90 x 112
3.543
4.409
0.0020
5.669
-
2.559
3.386
3.780
4.173
95 x 120
3.740
4.724
0.0020
5.866
-
2.559
3.386
3.780
4.173
100 x 125
3.937
4.921
0.0020
6.063
-
2.559
3.386
3.780
4.173
110 x 140
4.331
5.512
0.0020
7.087
-
3.543
4.488
5.039
5.512
120 x 155
4.724
6.102
0.0020
7.795
-
3.543
4.488
5.039
5.512
130 x 165
5.118
6.496
0.0020
8.189
-
3.543
4.488
5.039
5.512
1-1/2
3
3-15/16
1.500
3.000
3.937
OTHER INCH SIZES AVAILABLE UPON REQUEST.
1.969
3.740
4.921
T = shaft/hub tolerances
-2-
for shaft:
for hub:
d +0/-T
d -0/+T
Low Profile Locking Assembly ™
Locking Screws DIN
Qty
Size Length MA
Mt
lb-ft
p
p’
psi
psi
22
33205
17690
4
25
25375
14210
27
22765
38
41
mm
lb-ft
M4
12
3
4
M4
12
3
14210
4
M4
12
3
25810
15805
4
M4
12
3.5
22330
15805
4
M4
12
3.5
45
21895
12325
4
M4
12
3.5
48
20300
12325
4
M4
12
3.5
82
26390
16530
3
M6
18
12
88
24795
16530
3
M6
18
12
121
27550
19575
4
M6
18
12
131
26100
19575
4
M6
18
12
138
24650
18125
4
M6
18
12
146
22040
16820
4
M6
18
12
171
16385
11310
4
M6
18
13
188
15080
10585
4
M6
18
13
188
14500
10585
4
M6
18
13
273
16095
11600
5
M6
18
13
350
18125
13195
6
M6
18
13
372
14065
10585
6
M6
18
13
545
17255
12760
8
M6
18
13
590
15805
12035
8
M6
18
13
700
15950
12035
9
M6
18
13
734
15080
11600
9
M6
18
13
1291
18560
14210
8
M8
22
30
1379
17400
13485
8
M8
22
30
1793
16675
12905
10
M8
22
30
1973
15225
11745
10
M8
22
30
2153
13920
10875
10
M8
22
30
2331
12905
10005
10
M8
22
30
3194
12615
9860
8
M10
25
61
4131
11600
9425
9
M10
25
61
5915
14500
11600
12
M10
25
61
6269
13775
10875
12
M10
25
61
6638
13050
10875
12
M10
25
61
8113
14500
11600
14
M10
25
61
11063
17400
13775
18
M10
25
61
11801
11600
9425
12
M12
30
107
12907
10150
7975
12
M12
30
107
18439
13050
10150
16
M12
30
107
p = shaft pressure
p’ = hub pressure
MT = torque capacity
MA = screw tightening torque
-3-
Unlimited Range of Applications
The RfN 7110 Locking Assembly™ provides a mechanical
shrink fit for low profile applications. Due to the locking
device’s frictional connection, there is no play or wear. The
RfN 7110 Locking Assemblies are suitable for securing all
types of hubs, pulleys, sprockets and gears onto shafts and
axles and are ideal for thin walled hubs. They also provide
accurate self-centering ability.
Simplified Manufacturing
Like all other Ringfeder® locking devices, the RfN 7110 Locking
Assembly™ is a keyless locking device, so connections only
require plain shaft and straight bore diameters. No additional
components or machining steps, slots, threaded holes, etc. are
needed. As a result of the RfN 7110’s design, hubs can be manufactured with through bores without any reduction in accuracy.
Easy Mounting, Removal and Adjustment
Due to its relatively wide construction, the RfN 7110 also
simplifies installation. The device uses standard capscrews that
are tightened to specific torque values. The RfN 7110 is easily
released using the locking screws in the threaded jacking hole
positions. No additional measures or auxiliary devices are
required. Adjustment is also simplified and can be done at
anytime by following the removal and mounting instructions.
Overload Protection
In extreme cases when the maximum torque capacity is
exceeded, the Locking Assembly™ will slip, thereby protecting
more valuable machine components from damage. However,
these devices are not suitable for use as slipping clutches as
some damage to components may occur.
RfN 7110
Ringfeder Corporation
For over 30 years, Ringfeder Corporation has been the leader
in keyless shaft/hub technology in North America. Our unparalleled technical expertise, wide range of power transmission
components and cutting edge support provide the right
solution for your PT needs. From your local inventory to 2D and
3D importable CAD files, RFC keeps you going. Visit our web
site at www.ringfeder.com or call 800-245-2580 for our latest
product brochures.
Installation
Removal
Mounting
Since the force is transmitted by contact pressure and friction
between functional surfaces, the condition of the contact
surfaces and proper tightening of the locking screws are of
great importance.
Removing
The Locking Assemblies™ RfN 7110 are to be removed in the
following sequence:
1. All contact surfaces, including screw threads and screw head
bearing surfaces, must be clean and slightly oiled (DO NOT USE
MOLYBDENUM DISULPHIDE) prior to assembly.
2. Tighten locking screws lightly and align hub.
3. Tighten screws evenly in diametrically opposite
sequence and do so in two or three stages up to the
indicated tightening torque.
4. Re-check tightening torque by applying it to all screws all
the way around. When no screw will turn any more, the assembly is complete.
1. Loosen all screws by a few turns.
2. Remove the screws adjacent to each threaded jacking hole
and screw them into these bores.
3. Tighten the jacking screws, starting with the positions furthest away from the slit first, in several stages until the connection is released.
4. The connection can then be either readjusted or disassembled. Remove the jacking screws only after the Locking
Assembly™ has been removed from the hub.
Dismount and clean dirty, undamaged Locking Assemblies™
before re-use. Follow mounting instructions on this page.
In accordance with our established policy to constantly improve our products, the specifications contained herein are subject to change without notice.
Since our engineers cannot be aware of all applications and cannot control all the factors that may affect the function of our products, our warranty applies to our products only.
TECHNICAL ASSISTANCE
Our Representative:
Call Us Toll Free at 1-800-245-2580
Please let us know what your specific requirements are and we shall be
very happy to work out detailed recommendations without any obligation. Just send a sketch with your requirements and specifications.
Call or write for more information
Visit our website: www.ringfeder.com
RINGFEDER CORPORATION
165 Carver Ave. • PO Box 691 • Westwood, NJ 07675
TEL (201) 666-3320 • FAX (201) 664-6053
Los Angeles Office TEL (805) 382-9900 • FAX (805) 382-9980
This publication may not be reproduced, either partly or wholly, without the source being quoted.
© 2006 Ringfeder Corporation.
W-7110
1/2006 AA
Printed in the USA
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