Ingersoll Rand 3956B2TiEX 1.5" Titanium Pneumatic Impact Wrench | 1 - 1/2 Square Drive | 3600 RPM | 5450 ft-lbs Max Torque | Inside Trigger

High-torque bolting in potentially explosive industrial environments requires equipment selected for both fastening performance and hazardous-area requirements. The Ingersoll Rand 3956B2TiEX Titanium Pneumatic Impact Wrench combines an ATEX-certified configuration with 5,450 ft-lbs (7,300 Nm) maximum reverse breakaway torque for loosening large, resistant fasteners. Part of the 3956 Series, this air-powered wrench features a 1-1/2-inch square thru-hole drive, 3,600 RPM free speed, and inside-trigger actuation. ATEX refers to the European regulatory framework for equipment used in potentially explosive atmospheres. The wrench's square drive accepts compatible impact-rated sockets, while the thru-hole design accommodates an appropriate socket-retention arrangement. Its 5,200 ft-lbs (7,020 Nm) maximum forward torque also supports large-fastener installation within the manufacturer's operating recommendations.

The 3956B2TiEX incorporates an optimized titanium hammer case, bronze endplates, and corrosion-resistant components for demanding industrial service. Its twin-hammer impact mechanism delivers repeated rotational impacts to tighten or loosen threaded fasteners, while the redesigned 360-degree D-auxiliary handle allows the supporting grip to be repositioned for different working orientations. Weighing 34.3 lbs (15.53 kg) and measuring 16.68 inches (423.65 mm) long, this inside-trigger model provides the torque capability of the standard 3956B2Ti with the additional hazardous-atmosphere conformity associated with the EX configuration. The manufacturer includes model 3956B2TiEX in its declaration of conformity to ATEX Directive 2014/34/EU. Suitability for a particular classified location must be established from the complete certification marking and site requirements.

Type: Titanium Pneumatic Impact Wrench | Manufacturer: Ingersoll Rand | Model: 3956B2TiEX | Series: 3956 | Configuration: ATEX/Hazardous Duty | Drive Size: 1-1/2" | Drive Type: Square, Thru-Hole | Actuation: Inside Trigger | Handle: 360° D-Aux Handle | 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 | Blows Per Minute: 700 | Weight: 34.3 lbs (15.53 kg) | Length: 16.68" (423.65 mm) | Air Inlet: 1/2" | Minimum Hose Size: 3/4" | Air Consumption at Load: 105 CFM | Average Air Consumption: 145 CFM | Operating Pressure: 90 PSI (6.2 bar) | Sound Pressure: 97.9 dB(A), ISO 15744 | Vibration Level: 16.4 m/s² (K = 5.6 m/s²) | ATEX Directive: 2014/34/EU

Features:

• ATEX-certified EX configuration provides a manufacturer-declared conformity option for appropriately classified potentially explosive atmospheres, subject to the tool's complete certification marking.
• 5,450 ft-lbs maximum reverse torque delivers substantial breakaway capability for large industrial fasteners.
• 5,200 ft-lbs maximum forward torque supports high-torque fastening where the required tightening values fall within the tool's specified capability.
• 1-1/2-inch square thru-hole drive accommodates compatible impact sockets and an approved socket-retention arrangement.
• Optimized titanium hammer case, bronze endplates, and corrosion-resistant components support durability during industrial operation.
• Twin-hammer impact mechanism delivers repeated rotational impacts for fastening and bolt removal.
• Reverse-bias motor and pressure-fed mechanism lubrication support the impact mechanism during high-torque work.
• Redesigned 360-degree D-auxiliary handle allows the supporting grip to be adjusted for different tool orientations.
• Inside-trigger actuation provides the specified D-handle control arrangement, while the integral muffler helps manage exhaust noise.

Note: Model 3956B2TiEX is the new and upgraded direct replacement for the older model 3955B2TiEX 

Applications:

• Petrochemical facility maintenance – servicing large bolted equipment connections where the tool's ATEX classification is suitable for the designated work area.
• Oil and gas equipment repair – removing and installing substantial mechanical fasteners during approved maintenance operations in classified environments.
• Chemical processing plants – performing high-torque fastening on suitable machinery and process equipment under applicable hazardous-area safety procedures.
• Industrial machinery overhauls – loosening large threaded fasteners during equipment disassembly and rebuilding, including facilities with hazardous-location requirements.
• Heavy equipment and infrastructure maintenance – handling large-fastener work where a 1-1/2-inch square-drive impact wrench and the specified torque capacity are appropriate.

FAQs:

• Q: What distinguishes the Ingersoll Rand 3956B2TiEX from the standard 3956B2Ti?

  A: Both models share the published 1-1/2-inch square thru-hole drive, inside trigger, maximum torque, speed, weight, and length. The 3956B2TiEX is the ATEX-certified variant. The standard 3956B2Ti should not be assumed suitable for hazardous atmospheres simply because its mechanical specifications are the same.

• Q: Can the 3956B2TiEX be used in ATEX Zone 1 or Zone 2?

  A: The EX model is identified as ATEX-certified, but suitability for any particular zone depends on the complete equipment marking, gas group, temperature class, special conditions of use, and site classification. Verify the manufacturer's declaration and equipment identification before use in a potentially explosive atmosphere.

• Q: What torque does this impact wrench provide for tightening and removal?

  A: Maximum reverse breakaway torque is 5,450 ft-lbs, while maximum forward torque is 5,200 ft-lbs. The recommended forward torque range is 1,600–4,900 ft-lbs. For fasteners requiring accurate final tightening, use an approved torque-verification procedure rather than relying on the impact wrench alone.

• Q: What air supply is required for the 3956B2TiEX?

  A: Ingersoll Rand specifies 90 PSI operating pressure, a 1/2-inch air inlet, and a minimum 3/4-inch hose size. Published airflow figures are 105 CFM at load and 145 CFM average consumption. The compressed-air installation must maintain suitable pressure and airflow at the tool, with air-system components appropriate for the work environment.

• Q: Does ATEX certification make the wrench suitable for every explosive atmosphere?

  A: No. ATEX certification has defined limits and conditions. The tool must be matched to the classified atmosphere and operated according to the manufacturer's instructions, including applicable accessory, compressed-air, and maintenance requirements.

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

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