Ball-Grip Positioning Arms

Ball-and-socket connections allow 360° positioning. Choose a complete arm or select a base, connectors, and accessories to build your own.
To ensure compatibility, select components that have the same ball diameter. Use reducing connectors (sold separately) to pair components with a 1 1/2" ball diameter to those with a 1" ball diameter.
For technical drawings and 3-D models, click on a part number.




Rotating and rotating/tilting complete arms have handles to lock joints into position. Rotating/tilting complete arms mount to a bench or a wall. Secure the object you want to position to the attaching end plate.
Any-which-way complete arms bend and stay in position. They do not have a ball; affix a screw-on base (sold separately) to attach to a connector.
To see the product in motion, click on a part number.
Base | Attaching End | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mount. Location | Max. Projection | Ht. | Ball Dia. | Max. Load Capacity, lbs. | Material | Ball Material | Mount. Fasteners Included | Dia. | Lg. | Wd. | No. of Mount. Holes | Mount Hole Dia. | Plate Dia. | Mount. Hole Dia. | Each | |
Rotating with Ball | ||||||||||||||||
Wall | 9 1/4" | 9" | 1 1/2" | 3 | Powder-Coated Aluminum | Rubber | No | __ | 4 3/4" | 3 7/8" | 6 | 11/32" | __ | __ | 0000000 | 0000000 |
Extended-Reach Rotating with Ball | ||||||||||||||||
Wall | 15 1/4" | 11 1/4" | 1 1/2" | 3 | Powder-Coated Aluminum | Rubber | No | __ | 4 3/4" | 3 7/8" | 6 | 11/32" | __ | __ | 0000000 | 000000 |
Rotating/Tilting with Ball | ||||||||||||||||
Bench, Wall | 14 1/2" | 14 1/2" | 1 1/2" | 3 | Powder-Coated Aluminum | Rubber | No | __ | 3 7/16" | 3 7/16" | 4 | 11/32" | __ | __ | 0000000 | 000000 |
Any-Which-Way | ||||||||||||||||
Bench, Wall | __ | 7 3/8" | __ | 1 | Plastic | __ | No | 2 1/2" | __ | __ | 4 | 13/64" | 2 1/2" | 13/64" | 00000000 | 00000 |


Screw-on bases have a universal AMPS (Attachment Mounting Pattern Standard) mounting hole pattern.
Round bases attach to components with four AMPS mounting holes. Round bases with seven mounting holes have an additional three-hole mounting pattern with a 1.8” bolt circle diameter.
Diamond bases attach to components with two AMPS mounting holes.
Base | Mount. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mount. Location | Ht. | Ball Dia. | Max. Load Capacity, lbs. | Material | Mount. Hole Pattern Compatibility | Ball Material | Dia. | Lg. | Wd. | Fasteners Included | No. of Holes | Hole Dia. | Each | |
Round Base | ||||||||||||||
Bench, Wall | 1 1/2" | 1" | 1 | Powder-Coated Aluminum | AMPS | Rubber | 2 7/16" | __ | __ | No | 7 | 7/32" | 00000000 | 000000 |
Bench, Wall | 2 1/8" | 1 1/2" | 3 | Powder-Coated Aluminum | AMPS | Rubber | 2 1/2" | __ | __ | No | 7 | 7/32" | 0000000 | 00000 |
Bench, Wall | 3 1/16" | 2 1/4" | 5 | Powder-Coated Aluminum | AMPS | Rubber | 2 7/16" | __ | __ | No | 4 | 7/32" | 00000000 | 00000 |
Diamond Base | ||||||||||||||
Bench, Wall | 1 1/2" | 1" | 1 | Powder-Coated Aluminum | AMPS | Rubber | __ | 2 7/16" | 1 5/16" | No | 2 | 7/32" | 00000000 | 00000 |




Style A bases have a handle to quickly grip or release pipes.
Base | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Style | Clamping Range | Ht. | Ball Dia. | Max. Load Capacity, lbs. | Material | Ball Material | Lg. | Wd. | Each | |
Pipe Mount | ||||||||||
A | 5/8"-1 1/8" | 4 3/16" | 1" | 1 | Plastic | Rubber | __ | 1 7/16" | 00000000 | 000000 |
A | 5/8"-1 1/8" | 4 1/4" | 1 1/2" | 3 | Plastic | Rubber | __ | 1 7/16" | 00000000 | 00000 |
B | 1"-1 1/4" | 3" | 1 1/2" | 3 | Powder-Coated Aluminum | Rubber | 2 3/8" | 7/8" | 0000000 | 00000 |
C | 2"-2 1/2" | 3 1/2" | 1 1/2" | 3 | Powder-Coated Aluminum | Rubber | 4" | 2 1/8" | 00000000 | 00000 |
Rectangular-Bar Mount | ||||||||||
D | 0"-2 1/2" | 2 1/2" | 1 1/2" | 3 | Powder-Coated Aluminum | Rubber | 3 1/8" | 1 1/4" | 0000000 | 00000 |
D | 0"-3" | 4 11/16" | 1" | 1 | Powder-Coated Aluminum | Rubber | 4 7/8" | 1 13/16" | 00000000 | 00000 |
D | 0"-4" | 5 7/16" | 1 1/2" | 3 | Powder-Coated Aluminum | Rubber | 5 7/8" | 2 9/16" | 00000000 | 00000 |
D | 0"-4" | 8 5/16" | 2 1/4" | 6 | Powder-Coated Aluminum | Rubber | 5 13/16" | 2 9/16" | 00000000 | 00000 |

Mount. Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Mount. Location | Ht. | Ball Dia. | Max. Load Capacity, lbs. | Material | Ball Material | Base Dia. | No. of | Pipe Size | Thread Type | Each | |
Pipe | 3 1/4" | 1 1/2" | 3 | Aluminum | Rubber | 1 1/4" | 1 | 1/2 | NPT | 00000000 | 000000 |

For T-Slot Rail Ht. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Mount. Location | Single | Double, Quad | Ht. | Ball Dia. | Max. Load Capacity, lbs. | Material | Ball Material | Base Dia. | Mount. Fasteners Included | Each | |
T-Slot Rail | 1", 30mm, 1 1/2", 40mm, 45mm | 2", 60mm, 3", 80mm, 90mm | 2 1/4" | 1 1/2" | 3 | Steel | Rubber | 1 1/2" | Yes | 00000000 | 000000 |

Adhesive bases attach to a surface with an adhesive pad.
Base | |||||||||
---|---|---|---|---|---|---|---|---|---|
Mount. Location | Ht. | Ball Dia. | Max. Load Capacity, lbs. | Material | Ball Material | Lg. | Wd. | Each | |
Bench, Wall | 3" | 1 1/2" | 3 | Plastic | Rubber | 5 1/2" | 7 1/4" | 0000000 | 000000 |


Hand-held device grips adjust for a secure hold.
Styles G and H do not have a ball; affix a screw-on base (sold separately) to attach to a connector. Maximum load capacity is based on the screw-on base you choose.
Style G have a spring-loaded top bracket that expands, so you can insert your tablet. For a secure hold, the bracket clamps down on your device. They have a keyed lock to prevent your tablet from being removed once it’s in the holder.
Style H hold devices that don’t have a uniform shape, such as radios and GPS navigators. They have rubber fingers that adjust to fit around curves, avoid antennas, and grip irregular shapes.


Rotation adapters allow your device to be rotated between landscape and portrait mode without unlocking and adjusting the entire positioning arm.
These adapters can only be used with hand-held device grips that do not include a ball and have an AMPS mounting hole pattern. Affix a screw-on base (sold separately) to attach to a connector.
Mount. Hole Pattern Compatibility | Material | Base Dia. | Mount. Fasteners Included | Each | |
AMPS | Plastic | 4" | Yes | 00000000 | 000000 |

Tablet and laptop holders have spring-loaded brackets that adjust to fit most tablets and compact laptops. They have a universal AMPS mounting hole pattern. They do not have a ball; affix a screw-on base (sold separately) to attach to a connector.
Mount. | ||||||
---|---|---|---|---|---|---|
Lg. | Wd. | Material | Fasteners Included | Hole Pattern Compatibility | Each | |
10" | 10"-16" | Plastic | Yes | AMPS | 00000000 | 000000 |

Keyboard
Mounting Plate
Flat-panel monitor mounting plates have a VESA standard mounting hole pattern to attach monitors, tablet holders, and other devices.
Mounting plates for monitors and keyboards do not have a ball; affix a screw-on base (sold separately) to attach to a connector.
Mount. | |||||||||
---|---|---|---|---|---|---|---|---|---|
For Mount. | Wd. | Ht. | Max. Load Capacity, lbs. | Material | Fasteners Included | Monitor Hole Pattern Compatibility | Keyboard Hole Pattern Compatibility | Each | |
Monitor, Keyboard | 4 13/16" | 10 13/16" | Not Rated | Powder-Coated Steel | Yes | VESA 100, VESA 75 | AMPS | 00000000 | 000000 |
T-Slotted Framing Positioning Arms


Make your T-slotted framing workstation more ergonomic. These positioning arms let you move tools and other items within reach, reducing fatigue and streamlining repetitive processes.
Extended positioning arms lock into position when you tighten the screws in the joints. Those with a cable-routing hole are hollow, so you can route cables through them.
Ball-grip positioning arms have ball-and-socket connections, so the entire arm moves 360°. Secure items using the mounting plate.
Arms with AMPS mounting hole pattern are often used on GPS units, cameras, and other small electronics.
For technical drawings and 3-D models, click on a part number.
For Rail Ht. | Attaching End | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Single | Double, Quad | Triple | Projection | Overall Ht. | Max. Load Capacity, lbs. | Color | Material | Mount Type | Fasteners Included | Mounting Hole Pattern Compatibility | Mounting Fasteners Included | Each | |
Ball-Grip Positioning Arm | |||||||||||||
Rotate, Side-to-Side, Tilt, In/Out, Up/Down | |||||||||||||
1" 1 1/2" 30mm 40mm 45mm | 2" 3" 60mm 80mm 90mm | 3" 4 1/2" 120mm | 5 3/8" | 3 1/4" | 3 | Black | Powder-Coated Aluminum | Plate | No | AMPS | Yes | 000000000 | 000000 |
Extended Ball-Grip Positioning Arm with Cable Routing Hole | |||||||||||||
Rotate, Side-to-Side, Tilt, In/Out, Up/Down | |||||||||||||
1" 1 1/2" | 2" 3" | 3" 4 1/2" | 11 7/16" | 4 5/16" | 30 | Black/Blue | Anodized Aluminum | Plate | No | BOA Cognex Checker 100 Cognex In-Sight 5000 DALSA DVT Legend 500 Dataman 100/200 Keyence IV-500/150/2000 | Yes | 00000000 | 000000 |
T-Slotted Framing Mounts for Monitors and Computer Accessories
Attach and position phones, tablets, monitors, and computer accessories on T-slotted rails.
For technical drawings and 3-D models, click on a part number.

Hand-held device mounts have adjustable grips for a secure hold on your device.
Mounts with a ball-grip positioning arm extend and adjust to accommodate multiple users. They have a ball-and-socket connection for 360° positioning. Move them out of the way when not in use.
For Rail Ht. | Overall | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Single | Double, Quad | Triple | For Device Wd. | Projection | Ht. | Wd. | Max. Load Capacity, lbs. | Color | Material | Mounting Fasteners Included | Each | |
Rotate, Side-to-Side, Tilt, In/Out, Up/Down | |||||||||||||
M | 1" 1 1/2" 30mm 40mm 45mm | 2" 3" 60mm 80mm 90mm | 3" 4 1/2" 120mm | 1 7/8"-3 1/4" | 7 1/2" | 3 1/4" | 3 1/4" | 1 | Black | Powder-Coated Aluminum | Yes | 000000000 | 000000 |

Tablet mounts have adjustable grips for a secure hold on your device.
Mounts with a ball-grip positioning arm extend and adjust to accommodate multiple users. They have a ball-and-socket connection for 360° positioning. Move them out of the way when not in use.
For Rail Ht. | Overall | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Style | Single | Double, Quad | Triple | For Device Wd. | Projection | Ht. | Wd. | Max. Load Capacity, lbs. | Color | Material | Mounting Fasteners Included | Each | |
Rotate, Side-to-Side, Tilt, In/Out, Up/Down | |||||||||||||
N | 1" 1 1/2" 30mm 40mm 45mm | 2" 3" 60mm 80mm 90mm | 3" 4 1/2" 120mm | 6 1/4"-8 3/32" | 8 1/16" | 10 1/4" | 8 1/8" | 3 | Black | Powder-Coated Aluminum | Yes | 00000000 | 0000000 |
Bench-Mount Flat-Panel Monitor Positioning Arms
These arms have a VESA (Video Electronics Standards Association) standard mounting hole pattern to attach a monitor.
For technical drawings and 3-D models, click on a part number.

Base | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Monitor Size | Display Ht. | Max. Projection | Max. Load Capacity, lbs. | Material | Lg. | Wd. | No. of Mounting Holes | Mounting Hole Dia. | Mounting Fasteners Included | Attaching End Mount Type | Attaching End Mounting Hole Pattern Compatibility | Each | |
Rotate, Side-to-Side, Tilt, Up/Down | |||||||||||||
10"-32" | 8"-21 1/4" | 7 1/4" | 10 | Powder-Coated Aluminum | 3 1/2" | 3 1/2" | 4 | 5/16" | No | Plate | VESA 75 | 00000000 | 0000000 |
Monitor and Keyboard Positioning Arms


Bench-Top
Mount Shown Installed
Your entire workstation mounted on a single arm. These arms have two plates, each with its own industry-standard mounting pattern. Connect monitors, tablets, keyboards, and other compatible devices to them. Swing your keyboard out of the way or tilt your monitor for a better view—these arms have ball-and-socket joints for 360° range of motion. To keep a configuration, simply lock the joints in place.
VESA (Video Electronics Standards Association) mounting hole patterns attach to monitors. AMPS mounting hole patterns attach to keyboards. To connect two devices with VESA mounting hole patterns, use adapters (sold separately) to convert the AMPS end mount to a VESA end mount.
Rectangular bar-mount arms have a base that clamps around rectangular parts, such as square posts, t-slotted framing, and rails. They’re commonly used on forklift cages.
Bench-top mount arms have a mounting plate at their base that screws into a surface, such as a tabletop or vehicle floor.
For technical drawings and 3-D models, click on a part number.


Projection | Base | Attaching End Mounting Hole Pattern Compatibility | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Display Ht. | Min. | Max. | Max. Load Capacity, lbs. | Clamping Range | Material | Lg. | Wd. | Mounting Fasteners Included | Attaching End Mount Type | For Monitor | For Keyboard | Each | |
Clamp-On Rectangular-Bar Mount | |||||||||||||
5 1/4"-9 3/16" | 5 3/8" | 17 15/16" | 3 | 1 3/4"-4" | Powder-Coated Steel | 5 11/16" | 1 5/8" | __ | Plate | VESA 75, VESA 100 | AMPS | 0000000 | 0000000 |
Screw-On Bench-Top Mount | |||||||||||||
9 3/4"-28 1/4" | 6 5/8" | 19 3/4" | 3 | __ | Powder-Coated Aluminum | 3 1/2" | 3 1/2" | Yes | Plate | VESA 75 | AMPS | 0000000 | 000000 |

Lg. | Wd. | Material | Attaching End Mounting Hole Pattern Compatibility | Each | |
3 1/2" | 3 1/2" | Powder-Coated Steel | AMPS × VESA 75 | 0000000 | 000000 |
Tablet Positioning Arms
Position your tablet within view while keeping your hands free to work. These arms mount to a variety of surfaces while keeping a secure grip on your tablet.
Bar-, pipe-, magnetic-, suction-, and threaded-stud-mount arms have ball-and-socket joints that give them a 360° range of motion. Tilt or rotate them for a better viewing angle and lock the joints in place.
Clamp-on rectangular bar-mount arms have a base that fits around rectangular parts, such as square posts, t-slotted framing, and shelving units.
Clamp-on pipe-mount arms attach to round bars, pipes, and railings using adjustable jaws. They’re commonly used to mount screens to cart handles.
Magnetic-mount arms cling to magnetic surfaces and have a strong enough hold to be mounted from any orientation, such as on the side of a machine. They’re good for creating a temporary display because they’re easy to move from place to place.
Suction-mount arms are ideal for mounting tablets onto flat surfaces and windows, such as the windshield of your vehicle. The suction cup base creates a strong hold to keep the arm mounted from any orientation. They’re easy to remove and install, so they’re good for when you want a temporary display.
For technical drawings and 3-D models, click on a part number.