CAMCORP SWF with Externally Mounted Fan - Manual (Page 38)

3
Torque-Limiter
Clutches
Stock Plate Sprockets with Ground
Face and Bored to Fit the
Martin
Torque Limiter
Sprocket Size
35TTA25-25
35TTA26-25
40TTA20-25
40TTA22-25
40TTA24-25
40TTA28-25
40TTA30-25
50TTA17-25
50TTA21-25
50TTA22-25
Sprocket Size
35TTA35-35
35TTA40-35
40TTA28-35
40TTA30-35
40TTA32-35
50TTA22-35
50TTA24-35
50TTA25-35
50TTA26-35
60TTA18-35
60TTA20-35
TT25 1 300 700 400 1200 2 1 ⁄
2
1 3 ⁄
4
1 ⁄
8
11 ⁄
32
29 ⁄
64
19 ⁄
64
19 ⁄
64
2 1 ⁄
2
1 1 ⁄
2
1.368 1.631/1.628
TT35 2.5 600 1700 900 2500 3 1 ⁄
2
2 7 ⁄
16
1 ⁄
8
5 ⁄
8
45 ⁄
64
23 ⁄
64
35 ⁄
64
3 3 ⁄
16
1 15 ⁄
16
1.675 2.006/2.003
TT50 6 950 2650 2350 5700 5 2 7 ⁄
8
1 ⁄
8
5 ⁄
8
53 ⁄
64
29 ⁄
64
21 ⁄
32
4 5 ⁄
16
2 13 ⁄
16
2.625 3.008/3.005
TT70 18 2100 8000 3100 11500 7 3 7 ⁄
8
1 ⁄
4
1 1 ⁄
4
55 ⁄
64
31 ⁄
64
29 ⁄
32
6 4 3.811 4.197/4.194
Torque Rating ▲ C K L
(Pound-Inches) +.000 +.003
With One With Two –.002 –.000
Size Avg. Spring Springs** G Spline Spkt.
No. Wt. Min. Max. Min. Max A B Min. Max. D E ♦ H J O. D. Bore
Torque-Limiter Clutch Ratings
TT25 1 ⁄
2
7 ⁄
8
1
TT35 3 ⁄
4
1 3 ⁄
16
1 1 ⁄
4
TT50 1 1 3 ⁄
4
2
TT70 1 3 ⁄
8
2 3 ⁄
4
3
Size Stock Max. Bore
No. Bore Std. KW* Shallow KW*
1 ⁄
2
- 9 ⁄
16
1 ⁄
8
Ч 1 ⁄
16
1 7 ⁄
16
-1 3 ⁄
4
3 ⁄
8
Ч 3 ⁄
16
5 ⁄
8
- 7 ⁄
8
3 ⁄
16 Ч 3 ⁄
32
1 13 ⁄
16
-2 1 ⁄
4
1 ⁄
2 Ч 1 ⁄
4
15 ⁄
16
-1 1 ⁄
4
1 ⁄
4
Ч 1 ⁄
8
2 5 ⁄
16
-2 3 ⁄
4
5 ⁄
8
Ч 5 ⁄
16
1 5 ⁄
16
-1 3 ⁄
8
5 ⁄
16
Ч 5 ⁄
32
3 13 ⁄
16
-3 3 ⁄
4
Ч 3 ⁄
8
Torque- Torque-
Limiter Limiter
Bore Keyway Bore Keyway
TT25 1 ⁄
2
5 ⁄
8
3 ⁄
4
7 ⁄
8
TT35 3 ⁄
4
7 ⁄
8
1
TT50 1 1 1 ⁄
8
1 3 ⁄
16
1 1 ⁄
4
1 3 ⁄
8
1 7 ⁄
16
1 1 ⁄
2
1 5 ⁄
8
TT70 1 7 ⁄
16
1 1 ⁄
2
1 3 ⁄
4
1 15 ⁄
16
2 2 7 ⁄
16
Size
No. Finished Bores
STK. Ͼ 25 19 19 16 .. .. .. .. .. ..
TT25 Min. Teeth MTO ␺ 25 19 19 16 .. .. .. .. .. ..
Bush. Lght. Req’d. 1 ⁄
8
1 ⁄
8
1 ⁄
4
1 ⁄
4
.. .. .. .. .. ..
STK. Ͼ 35 25 26 21 18 15 .. .. .. ..
TT35 Min. Teeth MTO ␺ 33 25 26 21 18 15 .. .. .. ..
Bush. Lght. Req’d. 1 ⁄ 8 1 ⁄ 8 1 ⁄ 4 1 ⁄ 4 3 ⁄ 8 3 ⁄ 8 .. .. .. ..
STK. Ͼ 48 35 35 29 25 19 .. .. .. ..
TT50 Min. Teeth MTO ␺ 46 35 35 29 25 19 .. .. .. ..
Bush. Lght. Req’d. 1 ⁄
8
1 ⁄
8
1 ⁄
4
1 ⁄
4
3 ⁄
8
3 ⁄
8
.. .. .. ..
STK. Ͼ .. .. 48 38 33 26 21 18 16 14
TT70 Min. Teeth MTO ␺ .. .. 48 38 33 26 21 18 16 14
Bush. Lght. Req’d. .. .. 1 ⁄
4
1 ⁄
4
3 ⁄
8
3 ⁄
8
1 ⁄
2
7 ⁄
8
Ͼ 7 ⁄
8
Ͼ 1 ␭
Unit Min. Allowable Sprocket Teeth and Length of Bushing Req’d for Chain Number
Size Sprocket Pitch 35 41 40 50 60 80 100 120 140 160
★ Min. number of teeth on sprocket stocked by factory which can be used w/Torque-Limiter clutch.
␺ Min. number of teeth on made-to-order sprocket which will permit chain to clear friction disc.
* Use one 3 ⁄
8
″ long bushing and one 1 ⁄
2
″ long.
♦ Use two 1 ⁄
2
″ long bushings.
† KW Same as Std. Listed in Tables Above. Additional S.S. See List Price
Bored to Size Torque Limiters w/Std. KW & I-SS †
† Additional SS See List Price Alterations
* KW To Be Cut Central w/Threaded Spline
Standard Keyways
Stock Bores — Torque Limiters (No KW I-SS † )
▲ Using a center member with rubbing sides ground
parallel — 65 to 125 micro-inches. Center member
must be clean and free from oil, rust, etc.
** Second spring may be nested in one originally fur-
nished. Order if required.
♦ Nominal for maximum torque setting. For minimum
torque setting, add
3 ⁄
64
for No. 25; 5 ⁄
64
for No. 35; 3 ⁄
32
for
Nos. 50 and 70. When two springs are used this
dimension is increased approximately
1 ⁄
16
″ on Nos.
25, 35 and 50 — 3 ⁄ 32 ″ on No. 70.
TORQUE-LIMITER CLUTCHES
Each assembled unit contains one
spring. Higher ratings can be obtained
by ordering a second spring to nest in
the original one. Bushings need to be
ordered separately if required.
The rubbing sides of the center
member should be ground parallel —
65 to 125 micro-inches.
Sprocket Size
40TTA35-50
50TTA30-50
50TTA32-50
60TTA25-50
60TTA26-50
60TTA28-50
60TTA30-50
80TTA20-50
80TTA22-50
80TTA24-50
Sprocket Size
60TTA36-70
80TTA26-70
80TTA28-70
80TTA30-70
80TTA36-70
100TTA22-70
100TTA24-70
PRESSURE PLATE 2
FRICTION DISC 2
ADJ. NUT ASSY. & S.S. 1
ADJ. TENSION NUT 3
HUB 1
TT25 TT50
TT35 TT70
QTY. REG.*
SPARE PARTS
UNIT TT25 UNIT TT35
UNIT TT50 UNIT TT70
* PER UNIT
B
G E
C
E D
J L K
A