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FOR MOTOR TYPE - ENTER:
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| A | for a non-reversible air motor |
| AR | for manual reverse air motor. When AR is entered here with "H" entered at OPERATOR CONTROLS, forward and reverse are controlled by a spearate, 4-way valve. For more information, see the description for the "H" entry under OPERATOR CONTROLS. |
| E | for electric motors. All electric nutrunners are computer controlled. When E is entered here the X designation must be automatically entered in the secion for FOR CYCLE SHUTOFF CONTROL - ENTER. A controller with an electric motor drive unit is supplied separately for electric nutrunners. |
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| FOR CYCLE SHUTOFF CONTROL - ENTER: |
| C | for AAT's patented AccuBrake™ adjustable clutch shutoff for air tools Accu-Brake™ can be adjusted down to 55% of the torque rating on the nutrunner nameplate. It absorbs motor inertia during the tightening process to eliminate torque differences between hard and soft joints. When used in multiples on elastic joints (e.g. those with gaskets) the process can be automatically recycled after the initial rundown for toque recovery of relaxed fasteners without increasing other torque. |
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P | for air motor PAC shutoff. The P designation does not apply to electric nutrunners. AAT's Pressure Activated Control valve senses a near stall condition in an air motor and shuts off the main valve. Its purpose is to indicate cycle completion and to limit torque reaction time to the operator. Torque is controlled by pressure regulation.
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| X | for computer controlled shutoff. All electric nutrunners are computer controlled and must include this X designation. Air nutrunners with the X designation must be equipped with a transducer or transducer and angle encoder. AAT's controllers will deliver precise torque or torque/angle control with either air or electric nutrunners. Air nutrunners are controlled by a unique solenoid valve that uses increasing motor back pressure during tightening for a pressure-assisted, hair-trigger shutoff. |
| S | for stall air motor. Stall air powered nutrunners are the simplest tools available. Torque is controlled by pressure regulation. The operator has total on/off control of the operation. |
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FOR SPEED-SHIFT™ - ENTER:
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| D | for AAT's patented single step Speed-Shift™. Ratios from 3.4:1 to 8.8:1 |
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DD | for AAT's patented double step Speed-Shift™. Ratios from 12:1 to 22:1. Shifting is completely automatic and is dependant only on torque. If torque above the shift point occurs during a rundown - say from a damaged thread - the nutrunner will shift down without stopping and then up again when the damaged thread is cleared. If there is prevailing torque on the fastener, such as a plastic insert, a ratio must be selected that can drive the prevailing torque without shifting.
Note: All Speed-Shift™ ratios may not be workable for some applications. Contact AAT for assistance.
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| FOR MOTOR SIZE - ENTER: |
| 2 | for .63 Horsepower (470 Watts) air or electric |
| 3 | for 1.15 Horsepower (850 Watts) air only |
| 3H | for 1.30 Horsepower (950 Watts) electric only |
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| FOR OUTPUT CONFIGURATION - ENTER: |
| A |
for anglehead. Four anglehead sizes are available rated up to 60, 120, 240 and 400Nm. AAT's "Flat Angle" is used for higher torque up to 1,350 Nm. AAT's "Flat Angle" designs are based on the 240 and 400 Nm angleheads that are converted by the addition of a torque multiplier with all bearing mounted gearing. Square drives of 1/4", 3/8", 1/2", 5/8", 3 /4" and 1" are available. |
| A6X |
for anglehead with a six-inch extension. The extension increases the reach and reduces the reaction force for angle nutrunners. |
| AR |
for anglehead with a reaction bracket included for fixture mounting. This applies to the 60, 120 and 240 Nm angleheads. Mounting means for reaction devices are built into the 400Nm anglehead and all "Flat Angles". For these AR is not applicable.
AR is not applicable to the 400Nm anglehead and all "Flat Angles". These have built-in tapped holes for mounting a reaction bar or on a fixture.
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| AR6X |
The extension increases the reach and reduces the reaction force for angle nutrunners. |
| L |
for in-line with a fixed spindle. Four fixed spindle sizes are available rated up to 80, 150, 550 and 1000Nm with square drives of 1/4", 3/8", 1/2", 5/8", 3 /4" and 1". The output nosepiece has a splined section where an optional reaction bracket or reaction arm is mounted. Extended spindles for special applications are available. |
| LS |
for in-line with a sliding spindle. Four sliding (spring loaded) spindle sizes are available rated up to 80, 150, 500 and 1000 Nm with square drives of 1/4", 3/8", 1/2", 5/8", 3 /4" and 1". The output nosepiece has a splined section where a reaction bracket is held in place with the spindle bearing housing. The bracket is included and is used to mount the nutrunner to a fixture with other nutrunners for multiple spindle applications. A reaction arm is optional. Extended spindles for special applications are available. |
| O |
for offset in-line with a sliding spindle. Two offset sliding spindle sizes are available with ratings of 80 and 250 Nm and square drives of 1/4", 3/8", 1/2", and 3/4". |
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| FOR OPERATOR CONTROLS - ENTER: |
| M | for manual lever operation at the nutrunner. |
| R | for remote operation of the nutrunner(s) with a remote valve or switch. This feature is used mainly for fixtured, single or multiple, air or electric nutrunners. For electric tools, the run control is an operator-actuated switch connected directly to the motor controller(s). For air nutrunners with cycle shut-off control (C, P or X nutrunners), a remote pilot valve is used to supply a "RUN" port built into the tool valve(s). The tool will run as long as pressure is maintained It will shut-off when pressure is removed from "RUN" port or when the cycle is completed. When the cycle is completed, the nutrunner cannot be restarted until pressure is removed from the "RUN" port. Stall tools can also be equipped with remote valves and respond only to pressure applied to the "RUN" port. |
| P | for Push-to-Start operation at the nutrunner. This feature is used mainly for fixtured, single, air nutrunners. It allows the nutrunner to run unattended without additional external controls. For an electric tool, the motor controller is programmed so that a manual nutrunner will continue running when the switch is pressed and released and will stop when the switch is pressed and released a second time. A relay in the drive can be used to actuate clamps or similar devices to assist the work process. For an air nutrunner with cycle shut-off control (C, P or X nutrunner), the valve is actuated with a palm button that replaces the lever. The valve will remain actuated until the cycle is completed or the operator shuts off the valve. Manual shut-off is easily achieved by lifting the palm button to the off position. An optional signal port in the tool can be used to actuate clamps or similar devices to assist the work process. |
| H | for all external controls for stall (AS) air nutrunners only. This feature is used for fixtured, single or multiple, air nutrunners. The nutrunner has no integral valve and is controlled completely by an external valve. The valve used with multiple tools must have adequate flow capacity to supply all nutrunners. The 2 SERIES H nutrunners have an optional reversible motor. A 4-way valve with adequate capacity, one for each nutrunner, must be used to control the direction of rotation by switching two ports on the motor between pressure and exhaust. |
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| FOR RATED TORQUE ENTER: |
| xxx | Enter the desired torque rating in Newton Meters. Use a minimum of three digits (e.g. 080 for an 80 Nm rating or 1750 for a 1,750 Nm rating). Valid ratings can be from 10 to 2000 Nm (010 TO 2000). AAT will validate any request and rate a nutrunner at the requested torque, if valid, or the next highest valid torque. |
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| FOR TRANSDUCER OR TRANSDUCER AND ANGLE ENCODER ENTER: |
| T | for Transducer equipped nutrunners. Electric nutrunners include a transducer. |
| TA | for Transducer and angle encoder equipped nutrunners. |
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