The Crouse-Hinds XJG Expansion Couplings are designed for use with rigid metal conduit (RMC) and intermediate metal conduit (IMC) to allow for thermal expansion, contraction, and structural movement. Below are the key details:
Description
Applications
- Used to couple conduit sections subject to longitudinal movement.
- Prevents damage to conduit supports in structures such as bridges and buildings.
- Suitable for indoor and outdoor installations in long conduit runs where thermal expansion/contraction occurs.
- Helps maintain conduit integrity when crossing structural joints.
- Prevents buckling and circuit failures in extended conduit installations.
Key Features
- Weatherproof & corrosion-resistant – Suitable for indoor and outdoor applications.
- Available in 1/2” to 6” trade sizes.
- Allows 4” or 8” of conduit movement, depending on model.
- Internal bonding springs and metallic bushings ensure a high-integrity internal ground connection.
- Optional redundant bonding jumpers (BJ Series) – Provides visible confirmation of grounding.
- UL 514B, CSA 22.2 No. 18 3-12, NEMA FB1 certified.
- Listed for wet locations – Ensures long-term durability in harsh environments.
- Constructed from steel, aluminum, and Feraloy® iron alloy for maximum strength.
Ordering Information
| Conduit Size | Max Movement (in.) | Catalog # | Aluminum Catalog # | Bonding Jumper | A (Diameter) | B (Length) |
|---|---|---|---|---|---|---|
| 1/2” | 4 | XJG14 | XJG14 SA | BJ14 | 2.25” | 7.00” |
| 1/2” | 8 | XJG18 | XJG18 SA | BJ18 | 2.25” | 11.00” |
| 3/4” | 4 | XJG24 | XJG24 SA | BJ24 | 2.25” | 7.00” |
| 3/4” | 8 | XJG28 | XJG28 SA | BJ28 | 2.25” | 11.00” |
| 1” | 4 | XJG34 | XJG34 SA | BJ34 | 2.43” | 7.38” |
| 1” | 8 | XJG38 | XJG38 SA | BJ38 | 2.43” | 11.38” |
| 1-1/4” | 4 | XJG44 | XJG44 HDG | BJ44 | 3.12” | 7.56” |
| 1-1/4” | 8 | XJG48 | XJG48 HDG | BJ48 | 3.12” | 11.56” |
| 1-1/2” | 4 | XJG54 | XJG54 SA | BJ54 | 3.62” | 8.00” |
| 1-1/2” | 8 | XJG58 | XJG58 SA | BJ58 | 3.62” | 12.00” |
| 2” | 4 | XJG64 | XJG64 SA | BJ64 | 4.38” | 8.75” |
| 2” | 8 | XJG68 | XJG68 SA | BJ68 | 4.38” | 12.75” |
| 2-1/2” | 4 | XJG74 | XJG74 HDG | BJ74 | 4.87” | 10.00” |
| 2-1/2” | 8 | XJG78 | XJG78 HDG | BJ78 | 4.87” | 14.00” |
| 3” | 4 | XJG84 | XJG84 SA | BJ84 | 5.37” | 10.25” |
| 3” | 8 | XJG88 | XJG88 SA | BJ88 | 5.37” | 14.25” |
| 3-1/2” | 4 | XJG94 | XJG94 HDG | BJ94 | 6.62” | 10.00” |
| 3-1/2” | 8 | XJG98 | XJG98 HDG | BJ98 | 6.62” | 14.00” |
| 4” | 4 | XJG104 | XJG104 SA | BJ104 | 6.62” | 9.81” |
| 4” | 8 | XJG108 | XJG108 SA | BJ108 | 6.62” | 13.81” |
| 5” | 8 | XJ128 | XJ128 HDG | T | 7.64” | 14.75” |
| 6” | 8 | XJ148 | XJ148 HDG | T | 9.56” | 15.13” |
Options & Customization
- Copper-Free Aluminum (Suffix: SA) – Available for sizes up to 4”.
- Hot Dip Galvanized Finish (Suffix: HDG) – Standard for 1-1/4” and above.
- Optional Bonding Jumper (BJ Series) – Ensures redundant external grounding.
Conclusion
The Crouse-Hinds XJG Expansion Couplings offer a robust solution for conduit expansion, ensuring circuit integrity, grounding continuity, and compliance with industry standards. Whether used in bridges, high-rise buildings, or industrial applications, they provide reliable performance in environments prone to movement.
