Ingersoll Rand 3956A2Ti 1.5" Titanium Pneumatic Impact Wrench | 1 - 1/2 Square Drive | 3600 RPM | 5450 ft-lbs Max Torque | Outside Trigger

For large-fastener operations where equipment access and trigger placement influence tool handling, the Ingersoll Rand 3956A2Ti Titanium Pneumatic Impact Wrench provides substantial fastening power with an outside-trigger configuration. Part of the 3956 Series, this D-handle air impact wrench delivers up to 5,450 ft-lbs (7,300 Nm) maximum reverse breakaway torque for loosening seized and heavily tightened industrial bolts. Its 1-1/2-inch square thru-hole drive accepts compatible impact sockets with an appropriate retaining-pin arrangement, while the 3,600 RPM free speed supports fastener rundown before significant resistance develops. With 5,200 ft-lbs (7,020 Nm) maximum forward torque, the wrench also serves large-scale bolting applications in heavy equipment maintenance, industrial machinery assembly, rail service, and shipyard operations.

The 3956A2Ti combines an optimized titanium hammer case, bronze endplates, and corrosion-resistant components with a twin-hammer impact mechanism that delivers repeated rotational impacts to the fastener. Its reverse-bias motor supports demanding loosening work, while pressure-fed mechanism lubrication distributes lubricant to the impact mechanism. The redesigned 360-degree adjustable D-auxiliary handle allows operators to reposition their supporting grip for different tool orientations. Unlike the inside-trigger 3956B2Ti, this model places the trigger on the outside of the handle, providing an alternative control arrangement for buyers with specific operating preferences. Weighing 34.3 lbs (15.53 kg) and measuring 16.68 inches (423.65 mm) long, the 3956A2Ti is suited to industrial fastening work where substantial torque, two-handed control, and a compatible compressed-air supply are essential.

Type: Pneumatic Impact Wrench | Manufacturer: Ingersoll Rand | Model: 3956A2Ti | Series: 3956 | Drive Size: 1-1/2" | Drive Type: Square, Thru-Hole | Handle: 360° D-Aux Handle | Actuation: Outside Trigger | Impact Mechanism: Twin Hammer | Recommended Forward Torque Range: 1,600–4,900 ft-lbs (2,170–6,600 Nm) | Maximum Forward Torque: 5,200 ft-lbs (7,020 Nm) | Maximum Reverse Torque: 5,450 ft-lbs (7,300 Nm) | Free Speed: 3,600 RPM | Impacts Per Minute: 700 | Weight: 34.3 lbs (15.53 kg) | Length: 16.68" (423.65 mm) | Air Inlet: 1/2" NPT | Minimum Hose Size: 3/4" | Air Consumption at Load: 105 CFM | Average Air Consumption: 145 CFM | Operating Pressure: 90 PSI (6.2 bar) | Vibration Level: 16.4 m/s² (K = 5.6 m/s²)

Features:

• 5,450 ft-lbs maximum reverse breakaway torque provides the force needed to loosen large, resistant fasteners during machinery maintenance and equipment overhauls.
• 5,200 ft-lbs maximum forward torque supports high-torque assembly operations when the fastening requirements match the manufacturer's operating specifications.
• 1-1/2-inch square thru-hole drive accommodates compatible industrial impact sockets using an appropriate socket-retention system.
• Outside-trigger actuation distinguishes this configuration from the inside-trigger models in the 3956 Series.
• Optimized titanium hammer case, bronze endplates, and corrosion-resistant parts support durability in demanding industrial operating environments.
• Twin-hammer impact mechanism provides repeated rotational impacts for tightening and loosening large threaded fasteners.
• Reverse-bias motor supports high-torque loosening operations, while pressure-fed mechanism lubrication helps distribute lubricant within the impact mechanism.
• Redesigned 360-degree D-auxiliary handle allows repositioning of the supporting grip to accommodate different tool orientations.
• Integral muffler helps manage exhaust noise during pneumatic operation.

Note: Model 3956A2Ti is the new and upgraded direct replacement for the older model 3955A2Ti

Applications:

• Heavy machinery maintenance – loosening large bolts during repairs to excavators, loaders, mining machinery, and other substantial equipment assemblies.
• Industrial equipment installation – tightening and removing high-torque threaded fasteners during machinery assembly, installation, and relocation.
• Rail and transportation maintenance – servicing large bolted connections on compatible rail equipment and mechanical systems.
• Shipyard and marine equipment repair – performing high-torque fastening work on suitable shipboard machinery and mechanical assemblies.
• Industrial plant shutdowns and MRO – removing stubborn fasteners during equipment disassembly, component replacement, and major machinery overhauls.

FAQs:

• Q: What is the difference between the Ingersoll Rand 3956A2Ti and 3956B2Ti?

  A: Both models use a 1-1/2-inch square thru-hole drive and share the same maximum torque, free speed, weight, and length. The primary difference is trigger placement: the 3956A2Ti has an outside trigger, while the 3956B2Ti has an inside trigger. Choose according to the control arrangement preferred for your application.

• Q: Is the 5,450 ft-lbs rating the tightening torque or breakaway torque?

  A: The 5,450 ft-lbs figure represents maximum reverse breakaway torque for loosening fasteners. Maximum forward torque is 5,200 ft-lbs, while the recommended forward operating range is 1,600–4,900 ft-lbs. An impact wrench is not a calibrated final-torque tool, so use an appropriate torque-measuring method for specifications requiring accurate tightening.

• Q: What compressed-air supply does the 3956A2Ti require?

  A: Ingersoll Rand specifies a 1/2-inch NPT air inlet, a minimum 3/4-inch supply hose, and a 90 PSI operating pressure. Published air consumption figures include 105 CFM at load and 145 CFM average air consumption. Verify the compressor, air preparation equipment, and distribution piping can provide the required operating conditions at the tool.

• Q: Can I use ordinary 1-1/2-inch square-drive sockets with this impact wrench?

  A: The 3956A2Ti requires compatible 1-1/2-inch square-drive impact sockets suitable for its torque output. Use the correct thru-hole socket-retention arrangement and do not substitute hand-tool-only sockets or unapproved retaining hardware.

• Q: Is the 3956A2Ti ATEX certified for hazardous environments?

  A: The supplied manufacturer information does not identify the 3956A2Ti as ATEX certified. Ingersoll Rand separately offers the 3956B2TiEX configuration for applications requiring its specified hazardous-location certification. Verify applicable certification requirements before selecting an impact wrench for a hazardous atmosphere.

Tech Tip: To increase tool performance, extend tool life and lessen repair costs use it with a  Filter-Regulator-Lubricator (FRLs)

Ingersoll Rand 3956B1Ti Impact Wrench Parts List