Note when checking form and order pulley:

            1. Belt and pulley of our company can be attachment or replacement of imported belt and pulley.
            2. Please supply drawing when you order. We can also draw for clients as their 
                 supplied  specification, hole, key way and width.
            3. The tolerance of outside diameter, end bounce 7 wrap direction of pulley should conform 
                 to  Form1,form 2 & form3. 
           4. Width of different specification of timing belt and pulley must conform to form4.
            5. Outside diameter of pulleys and size should be as form's regulation.
           6. We can also produce pulleys even sizes are not in the form.
           7. The material of pulley mainly composed of carbon steel, if possible  aluminum alloy nylon can 
                also be  employed; if external diameter is larger than 250 mm, iron is used.

Representation of pulley

representation of T type pulley      representation of ARC tooth   representation of German T type pulley

 


Stype              Stype             Ftype               Ftype              Wtype

Dimension of HTD type pulley(mm)

type pb ht R S r angle
3M 3 1.28 0.91 1.90 0.3 14º
5M 5 2.16 1.56 3.25 0.48 14º
8M 8 3.54 2.57 5.35 0.8 14º
14M 14 6.20 4.65 9.80 1.4 14º

Dimension of HTD type pulley(mm)

  type type V
Grad
rd rt 2a
SE
br
N
br
SE
hg
N
hg
    difference   difference   difference         difference  
T2.5 1.75 +0.05 1.83 +0.05 0.75 +0.05 1 25 0.2 0.3 +0.05 0.53
    0   0   0         0  
T5 2.96 +0.05 3.32 +0.05 1.25 +0.05 1.95 25 0.4 0.6 +0.05 0.85
    0   0   0         0  
10 6.02 +0.1 6.57 +0.1 2.6 +0.1 3.4 25 0.6 0.8 +0.1 1.85
    0   0   0         0  
20 11.65 +0.15 12.6 +0.15 5.2 +0.13 6 25 0.8 1.2 +0.1 2.85
    0   0   0         0  

Dimension & tolerance of linear type pulley(mm)

type bw hg Ø+1.5º rb rt 2
MXL 0.85±0.05 0.69 20 0.35 0.13 0.508
XXL 1.14±0.05 0.84 25 0.35 0.30 0.508
XL 1.32±0.05 1.65 20 0.41 0.64 0.508
L 3.05±0.10 2.67 20 1.19 1.17 0.762
H 4.19±0.13 3.05 20 1.60 1.6 1.372
XH 7.90±0.15 7.14 20 1.98 2.39 2.794
XXH 12.17±0.18 10.31 20 3.96 3.18 3.048

Pitch tolerance(mm)

outside diameter pitch difference allowed
 gap gap allowed in 90º
<25.40 0.03 0.05
>25.40-50.80 0.03 0.08
>50.80-101.60 0.03 0.10
>101.66-177.80 0.03 0.13
>177.80-304.80 0.03 0.15
>340.80-508.00 0.03 0.18
>580.00 0.03 0.20

Tolerance of outside diameter of pulley(mm)

outside diameter outside diameter
<25.40 +0.05
0
>25.40-50.80 +0.08
0
>50.80-101.60 +0.10
0
>101.60-177.80 +0.13
0
>177.80-304.80 +0.15
0
>304.80-508.00 +0.18
0
>508.00 +0.20
0

Allowable bounce of pulley end(mm)

outside diameter allowable bounce
<101.60
>101.60
-254.00
>254.00
0.10
outside diameter×0.001
0.25+[(outside diameter-254.00)×0.005]

Allowable bounce of pulley warp direction(mm)

outside diameter allowable bounce
<203.20
>1203.20
0.13
outside diameter×0.001
0.13+[(outside diameter-203.20)×0.005]