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Momentum neck arm with dual swivel is a Knape and Vogt keyboard arm designed to position a keyboard tray in relation to a ball bearing track. The 21-3/4 inch glide track supports smooth travel along the mounting surface, which helps operators move the tray in and out of working position with consistent feel. The arm provides the ability to offset the keyboard tray in relationship to the track mounting position, so installers can align the tray to the user even when the track location is constrained by desk structure. A 5-1/2 inch neck is part of this configuration, which defines the drop from the track to the tray and affects where the keyboard sits in relation to the work surface. Powder coated steel construction forms the main structure, supporting long-term use in office or workstation environments.
The 21-3/4 inch glide track on this Knape and Vogt 8428DS21 keyboard arm defines the available front-to-back travel, which matters when fitting the arm under a work surface with limited depth. The 5-1/2 inch neck dimension affects vertical placement of the keyboard tray, so installers can plan how far below the work surface the tray will sit once mounted. Lift and Lock height adjustment lets the arm move to the desired height and hold its position, which supports repeatable setups across multiple workstations. The soft-touch knob used for tilt adjustment gives installers and users a clear control point for setting tray angle during initial setup or later tweaks. Because the arm allows the tray to be offset relative to the track mounting position, it helps accommodate structural obstacles under the desk while still centering the keyboard to the operator.
This Momentum neck arm with dual swivel is part of the Knape and Vogt keyboard arms and trays product class, so it is suited to workstation and multimedia setups where a sliding keyboard tray is required under a desk or work surface. The 21-3/4 inch ball bearing glide track defines its reach under the surface, making it appropriate when that depth is available beneath the desktop. Powder coated steel construction supports regular movement of the arm and tray in office, multimedia, and workspace environments where metal components see frequent adjustment. Because the arm provides the ability to offset the keyboard tray in relationship to the track mounting position, it works well when the ideal tray centerline does not align with available mounting structure under the top. The 360 degrees of swivel, combined with 35 degrees of independent tray swivel either side of centerline, supports workstation layouts where the user may need to angle the tray toward different equipment or viewing directions during the day.
The combination of Lift and Lock height adjustment and 30 degrees of total tray tilt adjustment at plus or minus 15 degrees allows this arm to support a wide range of typing postures, so installers can set different users at working heights and angles suited to their tasks. The soft-touch knob for tilt adjustment gives a tactile control point, which simplifies fine-tuning tray angle without tools once the arm is mounted. The ball bearing track construction supports smooth extension and retraction of the tray, reducing the effort required each time the user accesses the keyboard or stows it under the work surface. With 360 degrees of swivel at the arm and 35 degrees of independent tray swivel either side of the centerline, the system allows the tray to swing and rotate relative to the desk edge so users can maintain a comfortable reach position as they shift between monitor, documents, and other equipment. Spring assisted action to counterbalance keyboard weight helps the arm move more easily through its motion range, which is useful in daily adjustments when the keyboard is raised, lowered, or repositioned repeatedly.
The Knape and Vogt 8428DS21 is a Momentum neck arm with dual swivel for a keyboard tray, used as part of a keyboard arms and trays system in multimedia and workspace setups.
The Momentum dual swivel arm uses a ball bearing track, which provides smooth, consistent glide as the keyboard tray is moved under or away from the work surface during regular use.
Lift and Lock height adjustment on this keyboard arm lets the user raise or lower the tray and hold it at a chosen height, supporting repeatable working positions across different operators or tasks.
This keyboard arm offers 30 degrees of total tray tilt adjustment at plus or minus 15 degrees, so the tray angle can be set to match preferred wrist positions and ergonomic requirements.
The 5-1/2 inch neck defines the vertical drop from the track to the tray, which affects how far below the work surface the keyboard sits once installed in the workstation.
Dual swivel on this arm, with 360 degrees of swivel and 35 degrees of independent tray swivel either side of centerline, lets the tray be angled toward the user or equipment for more comfortable reach.
The Knape and Vogt Momentum neck arm with dual swivel, model 8428DS21, combines a 21-3/4 inch ball bearing glide track, Lift and Lock height adjustment, and tray tilt adjustment at plus or minus 15 degrees. These controls let installers set tray position, angle, and rotation so the keyboard aligns with real workstation layouts. Powder coated steel construction and spring assisted movement support frequent adjustment in multimedia and workspace environments. For projects requiring an offset-capable keyboard arm that can swivel and tilt to match the user, this Momentum dual swivel configuration provides a defined set of motion and positioning functions.
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