T–70
Drive selection procedures for drives using Double-Sided Belts are much the same as for
drives using conventional belting. Refer to the appropriate product and engineering sections in this
catalog for drive torque ratings, engineering information, pulley details, belt tension recommendations,
etc.
Some manufacturers, however, are producing double-sided belts which have nylon faced teeth
on one side only. For those belts, the limitations given in Section 5.1, page T-10 apply.
SECTION 19 LONG LENGTH TIMING BELT STOCK SPECIFICATIONS
Brief mention of this type of belt was given in Section 5.2, page T-10. As previously indicated,
long length belt stock is produced in spiral form. Spiral cut belting is produced from a belt sleeve
by moving the slitter laterally while the belt sleeve is rotating.
The resulting belting does not have continuous tensile cords, and the teeth are not perfectly
perpendicular to the longitudinal axis of the belt. As a result, wider belts may cause performance
problems (shown with * in Table 40). As long as the belt width is narrow, these properties have
been found to contribute little if any detrimental effects to belt performance. The maximum belt
width available using this process is 1" (25 mm). Tensile modulus and strength are equivalent to
conventional endless and long length belting.
This innovative prod-
uct is available in all types
of belting in all pitches. Re-
ciprocating carriage drives
requiring the use of higher
performance curvilinear
tooth belt products, in long
length form, can now be
easily handled.
This type of belt is
called belt stock, and its
availability from stock is in-
dicated on the Timing Belt
Locator Chart, on page 1-
2, at the beginning of the
belt product section.
Drive Selection With
Neoprene Long-
Length Belting
Drive selection proce-
dures for drives using
Long-Length Belting are
much the same as for
drives using conventional
endless belting. Refer to
the appropriate product
and engineering sections in
this catalog for drive torque
ratings, engineering infor-
mation, pulley details, belt
tension recommendations
etc. Table 40 includes rated belt working tension data, for those applications for which it could be
helpful, as well as maximum length available in each pitch. For drive design selection assistance
with belt stock, contact our Application Engineering Department.
Belt
Type
Stock
Width
.125
.1875
.250
.375
.250
.375
.500
.500
.750*
1.000*
.236
.354
.472
.984*
.236
.354
.472
.591
.984*
.236
.354
.472
.236
.354
.472
.354
.472
.591
Table 40 Neoprene Long-Length Belting Specifications
in
mm
Rated Working
Tension, Ta
Maximum
Available Length
3
4.5
6
10
6
9.5
13
13
19
25
6
9
12
25
6
9
12
15
25
6
9
12
6
9
12
9
12
15
2.3
3.4
4.5
6.8
7.0
10.5
14.0
24.5
36.8
49.0
15.1
22.7
30.2
63.0
24.1
36.1
48.1
60.3
100.4
5.9
8.9
11.8
26.9
40.4
53.8
56.6
75.5
94.6
lb
N
9
14
19
30
30
47
64
112
163
215
67
101
135
281
107
161
214
268
447
26
39
52
120
180
240
252
336
420
1000
660
485
330
460
320
225
275
185
135
475
300
250
120
600
315
240
200
115
600
390
300
600
385
300
360
275
230
ft
m
305
201
148
101
140
98
69
83
56
41
145
91
76
37
183
96
73
61
35
183
119
91
183
117
91
110
83
70
MXL (.080")
5 mm HTD
5 mm GT2
XL (.200")
L (.375")
3 mm HTD
2 mm GT2
3 mm GT2
*
*
*
*
