De-sta-co 846 Pneumatic Hold Down Toggle Clamp 750 Lb

Product Description

The DE-STA-CO 846 is a pneumatic hold down toggle clamp designed for workholding applications in industrial and manufacturing environments. Powered by compressed air through a 1/8 NPT port, it delivers an inner holding capacity of 750 lb (3340 N) at a maximum operating pressure of 69 psi. The U-bar opens to 97 degrees, providing clear access to the workpiece during load and unload cycles. With a height under bar of 1.61 inches and an overall closed height of 3.30 inches, the 846 fits into compact fixture layouts. A spindle is included with the clamp. Licensed machinists, fixture builders, and production tooling technicians are the primary installers.

The DE-STA-CO 846 is used in horizontal mounting configurations on jigs, fixtures, and production tooling where pneumatic actuation is required. The clamp is suited for repetitive-cycle applications where consistent clamping force and fast bar actuation reduce cycle time. Its outer clamping force of 405 lb (1800 N) extends its usefulness beyond direct hold-down to edge and side-loading scenarios. The operating temperature range of 14 degrees F to 194 degrees F makes it compatible with both standard shop environments and moderately elevated-temperature workholding situations.

Key Features

• Pneumatic actuation via 1/8 NPT port - no manual lever operation required
• Inner holding capacity of 750 lb (3340 N) at up to 69 psi
• U-bar with 97-degree opening for unobstructed workpiece access
• Outer clamping force of 405 lb (1800 N) for versatile load configurations
• Horizontal mounting orientation with 0.30-inch mounting holes on 1.00 x 1.50-inch hole pattern
• Spindle included; maximum mechanical advantage rated at 5.6:3.5

Compatibility

Designed as an OEM-style replacement or direct-fit clamp for horizontal-mount pneumatic toggle clamp applications requiring a 1/8 NPT air connection and a U-bar hold down configuration.

Installation Notes

Installation is performed by tooling technicians or fixture builders familiar with pneumatic workholding systems. Shut off and bleed all compressed air supply lines before mounting or removing the clamp. Mounting fasteners should be sized for the 0.30-inch mounting holes and torqued per the fixture designer's specifications. Verify that the shop air supply does not exceed 69 psi at the clamp port before commissioning the fixture.