Description
HMI Brass Cable Gland 45mm (1-3/4”) – Single & Double Compression
The HMI Brass Cable Gland 45mm (1-3/4”) is an industrial cable-entry solution available in Single Compression and Double Compression configurations. It is designed for applications where a cable needs to be securely introduced into an electrical enclosure, panel, junction box, control cabinet or other equipment while providing mechanical retention and an appropriate sealing arrangement.
The 45mm size is also identified as 1-3/4 inch, making it easier for contractors, electrical engineers and procurement teams to match the gland with project specifications that use either metric or inch-based terminology. HMI’s product range includes both Single Compression and Double Compression cable glands, while its published Double Compression range specifically includes DC045 – 45mm (1-3/4″).
Don’t Select a 45mm Cable Gland by Size Alone
One of the most common cable-gland purchasing mistakes is assuming that a 45mm gland automatically fits a 45mm cable.
It does not.
The nominal gland size is a product designation. The actual suitability depends on the cable’s:
- Outer diameter
- Cable construction
- Armoured or unarmoured design
- Sheath dimensions
- Gland clamping range
- Enclosure entry
- Thread specification
- Environmental conditions
- Required sealing/protection level
Thunderbolt’s cable-gland sizing guidance recommends checking the actual cable outer diameter (OD) rather than selecting a gland only from conductor size in sq.mm. Cable construction and manufacturer can change the finished cable diameter even when the conductor cross-section is the same.
For a detailed selection process, see our Cable Gland Supplier India: 15 Expert Tips to Choose the Right Cable Gland for Industrial Projects.
Single Compression vs Double Compression
The two variants should be selected according to the cable construction and installation requirement.
Single Compression
A Single Compression cable gland generally provides compression around the cable sheath to secure the cable and establish the required sealing arrangement.
It can be considered for suitable cable-entry applications where the cable construction and project specification call for a single-compression gland.
Before ordering, verify the cable type, OD, thread and manufacturer’s dimensional requirements.
Double Compression
A Double Compression cable gland provides a more elaborate sealing and gripping arrangement. HMI describes its Double Compression gland as suitable for armoured cables, with the gland sealing/gripping the inner and outer sheath while the cone and ring clamp the armour.
This makes the Double Compression variant particularly relevant when the installation requires an armoured-cable gland configuration.
For a deeper explanation, link this section to:
Armoured vs Unarmoured Cable Glands: Which One Do You Actually Need?
Single Compression vs Double Compression Comparison
Single Compression 45mm (1-3/4″)
| Parameter | Single Compression |
| Brand | HMI |
| Nominal Size | 45mm |
| Inch Equivalent | 1-3/4″ |
| Gland Type | Single Compression |
| Construction | Brass* |
| Primary Function | Cable entry, retention and sealing |
| Selection Basis | Cable OD, construction, thread and application |
| Suitable Cable | As specified by the applicable HMI gland design |
| Best For | Suitable cable-entry installations requiring single compression |
| Before Ordering | Confirm cable OD and gland dimensions |
Double Compression 45mm (1-3/4″)
| Parameter | Double Compression |
| Brand | HMI |
| Nominal Size | 45mm |
| Inch Equivalent | 1-3/4″ |
| Gland Type | Double Compression |
| Construction | HMI lists nickel-plated brass for its Double Compression range* |
| Primary Function | Inner/outer sheath sealing and armour clamping |
| Cable Type | Suitable armoured cables |
| Armour Function | Cone and ring clamp the armour |
| Entry Thread | HMI’s published standard range uses BSC |
| Application | Indoor/outdoor armoured cable applications, subject to specification |
| Before Ordering | Confirm cable OD, armour construction, thread and environmental requirement |
*Final material, finish, dimensions, thread and performance should be checked against the exact HMI variant/manufacturer documentation before publishing them as certified specifications. HMI’s published Double Compression page specifies nickel-plated brass and BSC entry thread.
How to Choose the Correct HMI 45mm Cable Gland
Before placing an order, follow this sequence:
Step 1: Identify the cable
Confirm whether the cable is:
- Armoured
- Unarmoured
- Single-core
- Multicore
- Power cable
- Control cable
- Instrumentation cable
Step 2: Measure the cable OD
Measure the complete outside diameter of the cable, not just the conductor size.
A cable gland is selected around the cable’s finished dimensions.
Step 3: Select Single or Double Compression
Do not choose the variant merely because both are called 45mm.
If the cable is armoured, check whether the project specification calls for a Double Compression armoured cable gland.
Step 4: Check the thread
The gland thread must match the electrical enclosure or equipment entry.
Do not assume that BSC, Metric, PG and NPT threads are interchangeable.
Step 5: Check environmental requirements
For outdoor, wet, dusty, corrosive or high-vibration installations, verify the required sealing and ingress-protection specification.
Thunderbolt’s IP Rating on Cable Glands guide explains why IP protection should be considered together with the complete cable-entry installation.
Step 6: Give complete information when ordering
For bulk procurement, provide:
HMI + 45mm + Single/Double Compression + Cable OD + Cable Construction + Thread + Quantity
This substantially reduces the possibility of receiving the wrong variant.
Applications
The HMI 45mm Cable Gland can be considered for suitable electrical and industrial cable-entry applications, including:
- Electrical panels
- Control panels
- MCC/PCC panels
- Junction boxes
- Industrial enclosures
- Switchgear
- Transformers
- Motors
- Industrial machinery
- Automation equipment
- Infrastructure projects
- EPC installations
- Power distribution systems
The exact application should always be matched to the gland construction, cable type and manufacturer’s specifications.
Why Choose Thunderbolt Electromech India Pvt. Ltd.?
Choosing the right cable gland is not simply about finding a 45mm brass gland at the lowest price.
The gland must match the cable, enclosure, thread, environment and installation requirement.
Thunderbolt Electromech India Pvt. Ltd. supplies cable glands for electrical contractors, panel builders, EPC companies, OEMs, maintenance teams and industrial procurement departments.
The Cable Gland range includes brands such as HMI, Comet, Dowells, Diamond and MIC, with Single Compression and Double Compression configurations available across different sizes. Thunderbolt’s existing supplier guide also emphasizes stock availability, technical selection assistance and pan-India supply.
Why buyers choose Thunderbolt:
- Industrial cable-gland range
- HMI cable-gland availability
- Single and Double Compression options
- Multiple sizes and configurations
- Support with cable-gland selection
- Bulk industrial order support
- Pan-India supply
- Assistance for contractors, EPCs and panel builders
- Multiple cable-accessory categories from one supplier
For customers who are still deciding which gland type or size they need, the main resource should be:
This should be your primary internal link from the product page.
FAQ
I checked current cable-gland questions from search results and Reddit discussions. The recurring themes are how to select gland size, cable OD versus cable size, single vs double compression, sealing/waterproofing, thread compatibility and fitting unusual cable dimensions. Reddit discussions also show buyers struggling when the cable/connector diameter doesn’t match the gland’s sealing range.
I would use these FAQs on the product page:
1. What size cable is suitable for an HMI 45mm cable gland?
The 45mm designation identifies the gland size; it does not mean that every cable with a 45mm outside diameter will fit. Check the cable’s actual OD against the HMI manufacturer’s specified clamping range before ordering.
2. What is the difference between a 45mm Single Compression and Double Compression cable gland?
The main difference is the gland construction and cable application. Single Compression glands provide compression around the cable sheath, while HMI’s Double Compression design seals the inner and outer sheath and clamps the armour using a cone and ring. The Double Compression version is intended for suitable armoured cable applications.
3. Should I buy a Single Compression or Double Compression HMI cable gland?
First identify the cable construction and project specification. If the cable is armoured, check whether the installation requires a Double Compression armoured gland. Do not substitute one type for another simply because both have a 45mm nominal size.
4. Does 45mm cable gland mean 45mm cable diameter?
No. A 45mm gland is a nominal product size. The actual cable acceptance depends on the gland’s specified dimensions and clamping range. Measure the complete cable OD before ordering.
5. Can I select a cable gland based only on cable sq.mm?
No. Cable conductor size alone is insufficient. The finished cable OD, construction, armour, sheath and gland specification must also be considered. Thunderbolt recommends checking the cable manufacturer’s dimensional information before selecting a gland.
6. What thread should I choose for an HMI 45mm cable gland?
Choose the thread specified for your enclosure or equipment entry. HMI’s published Double Compression range lists BSC as its entry thread, but the exact thread must be confirmed for the particular variant being purchased.
7. Can an HMI 45mm cable gland be used outdoors?
Potentially, depending on the exact gland configuration, cable type, sealing arrangement and required environmental/IP protection. Do not assume that the nominal gland size alone establishes outdoor suitability.
8. How do I order the correct HMI 45mm cable gland from Thunderbolt?
Provide the gland brand, 45mm size, Single or Double Compression, cable OD, cable construction, thread requirement and quantity. This gives the supplier the information needed to identify the correct variant.
9. Is HMI 45mm Double Compression suitable for armoured cable?
HMI’s published Double Compression range is described as suitable for armoured cables and states that the cone and ring clamp the armour while the gland seals the inner and outer sheath. Confirm the exact cable and gland dimensions before installation.
10. Where can I buy HMI 45mm Single or Double Compression Cable Glands in India?
Thunderbolt Electromech India Pvt. Ltd. lists the HMI 45mm Single/Double Compression Brass Cable Gland and supports industrial and project enquiries. The site currently displays the 45mm product as a multiple-variant product.
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