Ingersoll Rand NS11A7 Round Needle Housing | 7" Size | Extended Steel Needles

When pneumatic needle scaling requires additional reach across recessed welds, uneven castings, and hard-to-access metal surfaces, the Ingersoll Rand NS11A7 Round Needle Housing provides an extended-needle configuration for compatible in-line needle scalers. This accessory is supplied with 7-inch (178 mm) extended steel needles, offering 2 inches of additional needle length compared with the standard NS11A configuration. The round housing groups the needles for repeated impact cleaning, allowing individual needle tips to follow irregular surface contours while removing suitable rust, loose paint, weld slag, and other surface deposits.

Listed as an optional accessory in the Ingersoll Rand Construction Tool Steels and Accessories catalog, the NS11A7 is designed for use with Ingersoll Rand 172L, 182L, and 182G needle scalers. Its extended steel needles are particularly useful for accessing grooves, recessed metal features, and areas surrounding structural components where standard-length needles may offer limited reach. The manufacturer identifies NS11-122-19 as the corresponding replacement needle set, consisting of 19 steel needles with a 3 mm diameter and 7-inch length. The NS11A7 is a needle housing assembly with needles, not a complete pneumatic scaler.

Type: Round Needle Housing with Extended Needles | Part Number: NS11A7 | Brand: Ingersoll Rand | Needle Material: Steel | Needle Length: 7" (178 mm) | Housing Configuration: Round | Accessory Configuration: Optional Extended Length | Compatible Scaler Models: 172L, 182L, 182G | Replacement Needle Set: NS11-122-19 | Replacement Needle Diameter: 3 mm | Replacement Set Quantity: 19 Needles | Category: Needle Scaler Accessories

Features:

• Extended 7-inch steel needles provide additional working reach compared with the standard 5-inch needle housing configuration.
• Round housing groups the needles for impact cleaning of irregular metal surfaces, welded joints, and textured components.
• Multiple independently moving needle tips help follow surface contours and reach deposits around uneven features.
• Manufacturer-listed compatibility with Ingersoll Rand 172L, 182L, and 182G in-line pneumatic needle scalers.
• Steel needle construction supports appropriate rust removal, surface scaling, and weld slag cleanup operations.
• Optional extended configuration provides an alternative to standard-length needles without changing to a rectangular housing design.
• Separately identified replacement needle set, NS11-122-19, helps maintenance teams select the correct 7-inch steel needles when replacements are needed.

Made in USA:

Applications:

• Structural steel maintenance: Removing loose corrosion and surface deposits around welded connections, supports, and recessed steel features.
• Metal fabrication: Cleaning weld slag, scale, and surface contamination from irregular fabricated components.
• Heavy equipment refurbishment: Preparing accessible recessed metal surfaces and machinery components for inspection or refinishing.
• Foundry and casting cleanup: Removing suitable deposits from textured castings, grooves, and uneven metal contours.
• Industrial surface preparation: Cleaning localized rust and deteriorated coatings from steel components where extended needle reach is beneficial.
• Pneumatic tool maintenance: Replacing the existing needle housing configuration on compatible Ingersoll Rand in-line scalers.

FAQs:

• Q: Are the 7-inch steel needles included with the NS11A7 housing?

  A: Yes. Ingersoll Rand describes NS11A7 as a round needle housing with 7-inch (178 mm) extended steel needles. The listing refers to a housing-and-needle configuration rather than an empty housing.

• Q: How is NS11A7 different from the standard NS11A?

  A: Both use a round needle housing with steel needles. The NS11A has standard 5-inch needles, while the NS11A7 uses extended 7-inch needles. The additional length makes NS11A7 an option for applications requiring greater access to recessed surface features.

• Q: Which needle scaler models are compatible with NS11A7?

  A: Ingersoll Rand lists the 172L, 182L, and 182G in-line needle scalers for this accessory. Verify the tool model and existing attachment configuration before selecting a replacement housing.

• Q: Which replacement needle set should be ordered for the NS11A7?

  A: The specified replacement set is NS11-122-19, which contains 19 extended steel needles measuring 7 inches long and 3 mm in diameter. It is listed separately from the complete NS11A7 housing configuration.

• Q: Is NS11A7 interchangeable with the NS11B7 rectangular needle housing?

  A: The two accessories use different housing shapes. NS11A7 is round, while NS11B7 is rectangular; both are listed with 7-inch extended steel needles. Select the correct housing shape for the intended scaler attachment and application rather than assuming the complete housings are interchangeable.

• Q: Does NS11A7 include a pneumatic needle scaler tool?

  A: No. NS11A7 is the needle housing accessory with extended steel needles. A compatible pneumatic scaler is required to operate the attachment.

Looking for more information about Ingersoll Rand Round Needle? Click here to view the Catalog.

For help selecting the correct Ingersoll Rand Round Needles for your assembly application, call (800) 608-5210 or email info@intlairtool.com