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About Rotary Joints
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Compare flow types and rotation direction, and learn how to measure pipe size threads to choose the right rotary joint for your system.
Aluminum One-Way-Flow Rotary Joints
 |
These joints have a rotating shaft with threads on one end that connect to a continuously revolving drum, roller, or other rotating equipment. Use them to transfer hot and cold materials from your supply line. Joints are for one-way flow and are meant to be used in pairs—one joint serves as the supply line while the other serves as the return line. They are a compact size for use in small air and hydraulic applications.
Right-Hand Thread—If your drum rotates counterclockwise as you face the connecting end, you should select a rotating joint with right-handed threads.
Aluminum—Joints are made of lightweight aluminum.
Rotating Threads | Stationary Threads | Max. Pressure @ Temp. | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Max. Rotation Speed, rpm | Body Dia. | Lg. | Air | Oil | Temp. Range, ° F | Material | Shaft Material | For Use With | Max. Vacuum @ Temp. | Each | |||
Right-Hand Rotating Threads | ||||||||||||||||||||
| — | 3/8"-24 | UNF | Male | 1/8 | NPT | Female | 3,500 | 1 1/8" | 2 13/16" | 150 psi @ 72° F | 1,000 psi @ 72° F | -20 to 250 | Aluminum | Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K81 | 0000000 | ||
| — | 5/8"-18 | UNF | Male | 1/4 | NPT | Female | 3,500 | 1 5/8" | 3 3/16" | 150 psi @ 72° F | 1,000 psi @ 72° F | -20 to 250 | Aluminum | Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K82 | 000000 | ||
| — | 5/8"-18 | UNF | Male | 3/8 | NPT | Female | 3,500 | 1 11/16" | 3 15/16" | 150 psi @ 72° F | 500 psi @ 72° F | -20 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K83 | 000000 | ||
| — | 3/4"-16 | UNF | Male | 1/2 | NPT | Female | 3,500 | 2 1/4" | 4 7/16" | 150 psi @ 72° F | 750 psi @ 72° F | -20 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K84 | 000000 | ||
| — | 1"-14 | UNF | Male | 3/4 | NPT | Female | 3,500 | 2 7/8" | 5" | 150 psi @ 72° F | 1,000 psi @ 72° F | -20 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K85 | 000000 | ||
| 1/8 | — | NPT | Male | 1/8 | NPT | Female | 1,500 | 1 1/8" | 2 13/16" | 150 psi @ 72° F | 1,000 psi @ 72° F | -20 to 250 | Aluminum | Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K41 | 000000 | ||
| 1/4 | — | NPT | Male | 1/4 | NPT | Female | 1,500 | 1 5/8" | 3 3/16" | 150 psi @ 72° F | 1,000 psi @ 72° F | -20 to 250 | Aluminum | Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K42 | 000000 | ||
| 3/8 | — | NPT | Male | 3/8 | NPT | Female | 1,500 | 1 11/16" | 3 15/16" | 150 psi @ 72° F | 500 psi @ 72° F | -20 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K44 | 000000 | ||
| 1/2 | — | NPT | Male | 1/2 | NPT | Female | 1,500 | 2 1/4" | 4 9/16" | 150 psi @ 72° F | 750 psi @ 72° F | -20 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K45 | 000000 | ||
| 3/4 | — | NPT | Male | 3/4 | NPT | Female | 1,500 | 2 7/8" | 5 1/8" | 150 psi @ 72° F | 1,000 psi @ 72° F | -20 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K46 | 000000 | ||
| 1 | — | NPT | Male | 1 | NPT | Female | 1,500 | 3 1/4" | 6 3/16" | 150 psi @ 72° F | 1,000 psi @ 72° F | -15 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K47 | 000000 | ||
| 1 1/2 | — | NPT | Male | 1 1/2 | NPT | Female | 1,500 | 4 1/4" | 7 3/4" | 150 psi @ 72° F | 750 psi @ 72° F | -20 to 250 | Aluminum | Stainless Steel | Air and Hydraulic Oil | 28 in. Hg @ 72° F | 6827K48 | 000000 | ||
Iron and Steel One-Way-Flow Rotary Joints
Straight
 |
Right-Hand Thread—If your drum rotates counterclockwise as you face the connecting end, you should select a rotating joint with right-handed threads.
Rotating Threads | Stationary Threads | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Type | Gender | Pipe Size | Thread Type | Gender | Max. Rotation Speed, rpm | Body Dia. | Lg. | Material | Shaft Material | For Use With | Max. Temp., ° F | Max. Oil Pressure @ Temp. | Max. Vacuum @ Temp. | Each | |||
Right-Hand Rotating Threads | ||||||||||||||||||
| 1/4 | NPT | Male | 1/4 | NPT | Female | 500 | 1 11/16" | 2 13/16" | Nickel-Plated Steel | Nickel-Plated Steel | Air and Hydraulic Oil | 225 | 3,000 psi @ 72° F | 28 in. Hg @ 72° F | 1122K111 | 0000000 | ||
| 3/8 | NPT | Male | 3/8 | NPT | Female | 500 | 1 11/16" | 2 13/16" | Nickel-Plated Steel | Nickel-Plated Steel | Air and Hydraulic Oil | 225 | 3,000 psi @ 72° F | 28 in. Hg @ 72° F | 1122K112 | 000000 | ||
| 1/2 | NPT | Male | 1/2 | NPT | Female | 500 | 1 15/16" | 3 1/2" | Nickel-Plated Steel | Nickel-Plated Steel | Air and Hydraulic Oil | 225 | 3,000 psi @ 72° F | 28 in. Hg @ 72° F | 1122K113 | 000000 | ||
| 3/4 | NPT | Male | 3/4 | NPT | Female | 350 | 2 7/16" | 3 3/4" | Nickel-Plated Steel | Nickel-Plated Steel | Air and Hydraulic Oil | 225 | 3,000 psi @ 72° F | 28 in. Hg @ 72° F | 1122K114 | 000000 | ||
| 1 | NPT | Male | 1 | NPT | Female | 250 | 3 1/8" | 4 1/2" | Nickel-Plated Steel | Nickel-Plated Steel | Air and Hydraulic Oil | 225 | 3,000 psi @ 72° F | 28 in. Hg @ 72° F | 1122K115 | 000000 | ||
| 1 1/2 | NPT | Male | 1 1/2 | NPT | Female | 175 | 3 15/16" | 5 1/2" | Nickel-Plated Steel | Nickel-Plated Steel | Air and Hydraulic Oil | 225 | 3,000 psi @ 72° F | 28 in. Hg @ 72° F | 1122K117 | 00000000 | ||
| 2 | NPT | Male | 2 | NPT | Female | 150 | 4 7/16" | 6 3/8" | Nickel-Plated Steel | Nickel-Plated Steel | Air and Hydraulic Oil | 225 | 3,000 psi @ 72° F | 28 in. Hg @ 72° F | 1122K118 | 00000000 | ||
