Apex Universal Joint Catalog - Tecno Italia s.r.l
Apex Universal Joint Catalog - Tecno Italia s.r.l
Apex Universal Joint Catalog - Tecno Italia s.r.l
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Instructions to Calculate the Correct <strong>Joint</strong> Size<br />
1. Multiply operating speed (in RPM’s) by operating<br />
angle (in degrees) to get the RPM-working angle<br />
factor (X-Axis).<br />
Intermittent Operation Parameters:<br />
• Operating angle less than 5°: On time must not<br />
exceed 50% cycle time and cannot be greater than<br />
5 minutes.<br />
• Operating angle 5°-10°: On time must not exceed<br />
30% of total cycle time and cannot be greater than 4<br />
minutes.<br />
• Operating angle greater than 10°: On time must<br />
not exceed 20% of total cycle time and cannot be<br />
greater than 3 minutes.<br />
TRANSMITTED<br />
TORQUE<br />
N-m Lbs.-in.<br />
For Intermittent Operation:<br />
2. Find the intersecting point between transmitted<br />
torque (Y-Axis) and RPM-working angle factor<br />
(X-Axis).<br />
3. Choose the universal joint performance curve<br />
which is directly above the intersecting point from<br />
Step 2.<br />
For Continuous Operation:<br />
2. Find the intersecting point between 2 times the<br />
transmitted torque (Y-Axis) and RPM-working angle<br />
factor (X-Axis).<br />
3. Choose the universal joint performance curve<br />
which is directly above the intersecting point from<br />
Step 2.<br />
10K<br />
5K<br />
110K<br />
50K<br />
1K<br />
10K<br />
JOINT SIZE<br />
(HUB OUTSIDE DIAMETER)<br />
500<br />
5K<br />
4.0 In. (101.60 mm)<br />
100<br />
50<br />
10<br />
1K<br />
500<br />
100<br />
3.0 In. (76.20 mm)<br />
2.5 In. (63.50 mm)<br />
2.0 In. (50.80 mm)<br />
1.75 In. (44.45 mm)<br />
1.50 In. (38.10 mm)<br />
1.25 In. (31.75 mm)<br />
5<br />
1<br />
50<br />
10<br />
1.0 In. (25.40 mm)<br />
0.875 In. (22.23 mm)<br />
0.75 In. (19.05 mm)<br />
0.625 In. (15.88 mm)<br />
0.50 In. (12.70 mm)<br />
5<br />
0.375 In. (9.53 mm)<br />
1000 3000 5000 7000 9000 11,000 13,000<br />
15,000<br />
20<br />
1<br />
RPM WORKING ANGLE FACTOR