Specifications

Drive Size.........................................................1/2"
No-Load Speed...................................7,500 RPM
Maximum Torque......................................420 ft/lb
Air Inlet Size..............................................1⁄4" NPT
Air Consumption.........................................5 CFM
Operating Pressure....................................90 PSI
Weight............................................................6 lbs

Inventory

A. 1⁄2" Extended Anvil Impact Wrench .............1
B. 1⁄4" NPT Air Fitting .......................................1
C. Oil................................................................1

Operation

Install any 1⁄2" drive socket into your air impact
wrench. Push the reverse valve, shown in Figure
1, in or out to change direction. Turn the valve
knob from 1 to 6 to adjust air flow. Connect to air
line regulated at 90 PSI.
MODEL H8220
1⁄2" EXTENDED ANVIL
IMPACT WRENCH

INSTRUCTION SHEET

Figure 1. Model H8220
If you need he lp with your new pneumatic tool,
call our Tech Support at: (570) 546-9663 .
COPYRIGHT © AUGUST, 2007 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUC ED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZ ZLY INDUSTRIAL, INC.
#JM9743 PRINTED IN CHINA
Insert one shot of grease into the grease fitting
shown in Figure 1, every three months. The
impact wrench MUST be regularly lubricated with
3-4 drops of air tool oil directly into the air fitting
before each use. For best results, we recommend
using an in line filter, lubricator, and regulator, as
shown in Figure 2.
INJURY HAZARD!
Always disconnect tool from
air to prevent unexpected
operation during service!
EYE/EAR INJURY HAZ ARD!
Wear safety gl asses and
hearing prot ection when
using this tool!
DO NOT EXCEED 120 PSI!
Persona l injury c ould
occur.
SHATTERI NG HAZA RD!
Use sockets rated for
impact wrench use only.
Quick
Connector
Quick
Coupler
Air Hose Quick
Coupler
Quick
Connector
Lubricator
Filter
Regulator
Air
Compressor
Your
Tool
Figure 2. Installing your tool.
Reverse Valve
Grease Fitting