Ingersoll-Rand A Series

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document describes Air Percussive Chipping Hammers, specifically the "A" Series and "W" Series, manufactured by Ingersoll Rand.

Function Description

These tools are designed for chipping, cutting, chiseling, and breaking hardened materials. They operate by applying repetitive linear impacts from a tool steel, which is retained and driven by the chipper mechanism.

Important Technical Specifications

The hammers come in various models, each with specific performance characteristics:

Retainer Types: Models are available with "Required" and "Supplied" retainer types, including Plain and Rubber Buffered options.
Shank Size and Collar: Common shank sizes are 0.580 Hex and 0.680 Round, with Oval or Round collars.
Blows per Minute (BPM):
- 1A1S, 1A1SA, 1A1SA-EU, W1A1, W1A1-EU, 1A2S, 1A2SA, 1A2SA-EU, W1A2, W1A2-EU models: 2,500 BPM.
- 2A1S, 2A1SA, 2A1SA-EU, W2A1, W2A1-EU, 2A2S, 2A2SA, 2A2SA-EU, W2A2, W2A2-EU models: 2,300 BPM.
- 3A1S, 3A1SA, 3A1SA-EU, W3A1, W3A1-EU, 3A2S, 3A2SA, 3A2SA-EU, W3A2, W3A2-EU models: 1,725 BPM.
- 4A1S, 4A1SA, 4A1SA-EU, W4A1, W4A1-EU, 4A2S, 4A2SA, 4A2SA-EU, W4A2, W4A2-EU models: 1,480 BPM.
Stroke Length:
- 1 (25 mm) for 1A1S, 1A1SA, 1A1SA-EU, W1A1, W1A1-EU, 1A2S, 1A2SA, 1A2SA-EU, W1A2, W1A2-EU.
- 2 (51 mm) for 2A1S, 2A1SA, 2A1SA-EU, W2A1, W2A1-EU, 2A2S, 2A2SA, 2A2SA-EU, W2A2, W2A2-EU.
- 3 (76 mm) for 3A1S, 3A1SA, 3A1SA-EU, W3A1, W3A1-EU, 3A2S, 3A2SA, 3A2SA-EU, W3A2, W3A2-EU.
- 4 (102 mm) for 4A1S, 4A1SA, 4A1SA-EU, W4A1, W4A1-EU, 4A2S, 4A2SA, 4A2SA-EU, W4A2, W4A2-EU.
Sound Level dB (A) (ISO15744):
- Sound Pressure (Lp): Ranges from 109.8 dB(A) to 112.9 dB(A).
- Sound Power (Lw): Ranges from 120.8 dB(A) to 123.9 dB(A).
- Measurement uncertainty (Kpa, Kwa) is 3dB.
Vibration (ISO28927) m/s²:
- Level: Ranges from 13.7 m/s² to 18.9 m/s².
- Measurement uncertainty (*K) varies by model, ranging from 4.5 to 6.2.
- Note: Sound and vibration values are measured in compliance with internationally recognized test standards. Actual exposure may vary based on specific tool application.

Usage Features

Accessory Installation:
- Always use appropriate retainers, latches, or sleeves, along with barriers, to protect against ejected accessories.
- Before installing, removing, or adjusting any accessory, or performing maintenance, always turn off the air supply, bleed air pressure, and disconnect the air supply hose.
- Plain-Type Retainer (HH1-1190):
  - To remove chisel: Remove Lock Spring from the Retainer groove, remove Retainer from Barrel, raise chisel to clear alignment grooves, rotate 90°, and remove.
  - To install chisel: Insert chisel shank into the front of the Retainer, rotate 90° for collar to drop, attach Retainer to Barrel by aligning slot with groove, and insert Lock Spring around Barrel and Retainer.
- Quick-Change Type Retainer (HH1-1191):
  - To remove chisel: Lift Flat Spring and Pin, rotate chisel 90°, and remove. No need to remove the Retainer from the Barrel.
  - To install chisel: Insert chisel shank until it stops against the Barrel, rotate 90° until Flat Spring and Pin snap into position.
- Rubber Buffered Type Retainer (HHW1-300) (for use with threaded barrel):
  - To remove chisel: Grasp Retainer, unscrew from Barrel, remove buffer and chisel from the rear. The buffer splits to allow wide chisel use.
  - To install wide chisel: Pass shank through Retainer hole, fit buffer around chisel (shoulder in counter bore), and slide assembly into threaded end of Retainer.
  - Note: Moil point and narrow chisels can be removed/installed without removing the buffer from the Retainer.
  - Align chisel end with Nozzle, thread retainer onto Barrel, tighten clockwise until Lock Spring locates in recess. Check engagement by trying to rotate the Retainer.
Prior to Use:
- Do not lubricate with flammable or volatile liquids; use only recommended lubricants and proper cleaning solvents in a well-ventilated area.
- Tools are factory-coated with rust-resisting oil. Before use, remove this oil by dipping the tool in a suitable cleaning solution.
- Pour approximately 6 cm³ of cleaning solution into the air inlet and operate for 15 seconds.
- Dry the tool immediately, then pour 3 cm³ of Ingersoll Rand No. 10 Oil into the air inlet and operate for 5 seconds to lubricate all working parts.
Installation and Lubrication:
- Ensure proper air supply line sizing for maximum operating pressure (PMAX) at the tool inlet.
- Drain condensate daily from piping, air filter, and compressor tank.
- Install a properly sized Safety Air Fuse upstream of the hose and use an anti-whip device across any hose coupling without internal shut-off.
- The air system components include: Air filter, Regulator, Lubricator, Emergency shut-off valve, Hose diameter, Thread size, Coupling, Safety Air Fuse, Oil (for initial use and before starting, into air inlet).

Maintenance Features

Storage/Idle exceeding 24 hours: Pour 3 cm³ of IR # 10 oil into the air inlet and run the tool for 5 seconds.
Sluggish tool action: Pour 3 cm³ of cleaning solution into the air inlet and run for 30 seconds. Immediately after flushing, pour 3 cm³ of oil into the air inlet and run for 30 seconds.
End of Life: When the tool's life has expired, it is recommended to disassemble, degrease, and separate parts by material for recycling.
Repair and Maintenance: Should only be carried out by an authorized Service Center.
Refer all communications to the nearest Ingersoll Rand Office or Distributor.