Cable Trunking Reducer

Category Cable Tray Reducer

Cable trunking reducer for transitioning between different trunking sizes, available in concentric and eccentric types.
Enables smooth size reduction in cable trunking systems, complete with cover and fittings.
Durable and precision-engineered, suitable for PVC, galvanized steel, and stainless steel trunking.
Custom dimensions and materials available – left, right, and middle reducer options offered.

Cable trunking reducer, also known as galvanized steel trunking reducer or GI trunking reducing fitting, is specially designed and engineered for transitioning between different widths of cable trunking sections, allowing smooth cable flow from a larger trunking to a smaller trunking or vice versa, whilst providing complete cable protection and easy access. As the reliable cable trunking manufacturer, Lanye brand custom cable trunking reducer is available in various configurations, materials, sizes and forms to suit the location and requirements of the installation. Our cable trunking reducer can be used in almost any places including homes, commercial and industrial construction, supermarkets, hotels, hospitals, power plants, underground construction and high rise buildings, etc.

内容隐藏

1 1. What Is Cable Trunking Reducer?

2 2. Lanye Custom Cable Trunking Reducer Properties

3 3.Technical Data Of Custom Cable Trunking Reducer

4 4. What Are Advantages of Custom Cable Trunking Reducer?

5 5. What Is Cable Trunking Reducer Used For?

6 6. Installation Best Practices

7 7. Cable Trunking Reducer Selection Guide

8 8. Why Buy From Lanye

9 9.Frequently Asked Questions (FAQ)

1. What Is Cable Trunking Reducer?

A cable trunking reducer is a pre-fabricated fitting used to transition between two different widths of cable trunking. When a trunking run needs to change from a larger width to a smaller width (or vice versa) due to reduced cable volume, space constraints, or routing requirements, the reducer provides a smooth, gradual transition that maintains proper cable protection and prevents cable damage.

Cable trunking reducer is commonly fabricated using carbon steel grades Q195 or Q235. In the automated pre-galvanizing process, the carbon steel plates are immersed in a “galvanizing bath” containing molten zinc for a brief period. After being withdrawn from the bath, excess zinc is stripped away, leaving a relatively thin yet effective zinc coating on the steel surface. The cable trunking reducer is then manufactured using pre-galvanized steel through standard procedures such as punching, bending, and welding, carried out by a flexible automatic production line.

Galvanized cable trunking reducer exhibits excellent qualities including high strength, a robust design, durability, and resistance to rust. These characteristics make it an ideal choice for cable management, providing support and protection for internal cables against damage, dust, and water ingress. The tapered design allows cables to transition smoothly without sharp edges or sudden changes that could damage insulation. Cable trunking reducer is the reliable cable management solution to ensure the longevity and proper functioning of cables when transitioning between different trunking widths.

Main Functions of Cable Trunking Reducer

Function	Description
Width Transition	Smoothly transitions between different trunking widths
Cable Volume Management	Accommodates reducing or increasing cable volume
Cable Protection	Fully enclosed design protects cables through transition
Space Optimization	Allows trunking width to match cable volume requirements
Easy Access	Removable cover for cable installation and maintenance
Professional Appearance	Clean transition between different trunking sizes

2. Lanye Custom Cable Trunking Reducer Properties

Raw material: carbon steel Q235
Product type: trunking reducer fitting
Surface treatment: pre-galvanized, hot-dip galvanized, stainless steel
Appearance: smooth and even zinc layer, clean edges
MOQ: 60 pieces (can be mixed sizes)
OEM/ODM: acceptable and according to your specifications
Certification: CE, ISO, CCC certificates
Delivery: 15-20 days after deposit received
Payment terms: T/T, LC at sight acceptable
Application: building, construction, cable management, cable protection, electrical distribution, and more.

3.Technical Data Of Custom Cable Trunking Reducer

No	Type	Large Width (mm)	Small Width (mm)	Height (mm)	Length (mm)	Material	Weight (kg/pc)
1	Lanye-CTR-1	100	50	50	400	Pre-galvanized Steel	3.2
2	Lanye-CTR-2	100	75	50	400	Pre-galvanized Steel	3.6
3	Lanye-CTR-3	150	75	75	500	Pre-galvanized Steel	4.8
4	Lanye-CTR-4	150	100	75	500	Pre-galvanized Steel	5.2
5	Lanye-CTR-5	200	100	100	600	Pre-galvanized Steel	6.8
6	Lanye-CTR-6	200	150	100	600	Pre-galvanized Steel	7.5
7	Lanye-CTR-7	300	150	100	800	Hot-dip Galvanized Steel	11.2
8	Lanye-CTR-8	300	200	100	800	Hot-dip Galvanized Steel	12.5
9	Lanye-CTR-9	400	200	150	1000	Hot-dip Galvanized Steel	18.6
10	Lanye-CTR-10	400	300	150	1000	Hot-dip Galvanized Steel	20.4
11	Lanye-CTR-11	500	300	150	1000	Stainless Steel 304	26.8
12	Lanye-CTR-12	600	400	200	1200	Stainless Steel 316	38.4

Remark :
• Standard reducer length: 400mm-1200mm.
• Custom width transitions available.
• Eccentric reducer available (offset alignment).
• Cover included with all reducers.
• ODM/OEM Availability: Welcome to customize.

3.1 Standard Cable Trunking Reducer Configurations

Reducer Type	Description	Typical Application
Concentric Reducer	Centered transition (both sides taper equally)	General purpose, overhead runs
Eccentric Reducer	Offset transition (one side straight, one side tapers)	Wall-mounted runs, cable alignment
Gradual Reducer	Longer length for very gradual transition	Sensitive cables, high-speed pulls

3.2 Reduction Ratio Guidelines

Width Reduction	Recommended Reducer Length	Minimum Length
25mm	200mm	150mm
50mm	400mm	300mm
75mm	500mm	400mm
100mm	600mm	500mm
150mm	800mm	600mm
200mm	1000mm	800mm
300mm	1200mm	1000mm

3.3 Optional Accessories

Accessory	Availability
Internal Reducer Corner	Yes
Eccentric Reducer	Yes
Cover Clips	Yes
Couplers and Connectors	Yes
Support Brackets	Yes
Dividers / Separators	Yes
Earth Bonding Kits	Yes

4. What Are Advantages of Custom Cable Trunking Reducer?

Lanye custom cable trunking reducer has the following advantages which make it an excellent choice for efficient cable management solutions.

4.1 Smooth Width Transition

The engineered taper of Lanye trunking reducers provides a smooth, gradual transition between different trunking widths. This allows cables to transition without sharp bends or sudden changes that could damage insulation or impede cable pulling.

4.2 Complete Cable Protection

Unlike cable tray reducers which may expose cables, trunking reducers feature a fully enclosed body with removable cover. This provides excellent protection against dust, water ingress, physical damage, and accidental contact during the width transition.

4.3 Versatile Configuration Options

Trunking reducers are available in concentric (centered) and eccentric (offset) configurations. Concentric reducers are ideal for overhead runs, while eccentric reducers are preferred for wall-mounted runs where keeping one side of the trunking aligned with a wall or other reference is important.

4.4 Smooth Internal Surfaces

All internal surfaces are smooth with radiused transitions to prevent cable jacket damage during installation and pulling through the reducer.

4.5 Excellent Corrosion Resistance

The zinc coating (or stainless steel material) provides excellent corrosion resistance, safeguarding the reducer from rust and corrosion due to moisture, chemicals, and environmental factors.

4.6 Pre-Punched Connection Holes

Both ends of the reducer include pre-punched holes that align perfectly with straight trunking sections. Couplers and bolts are available for every reducer order.

4.7 Gradual Taper Design

Lanye reducers feature a gradual taper angle (typically 15-30 degrees) that provides a smooth transition without creating cable trapping points or excessive pressure on cables.

4.8 Removable Cover for Easy Installation

The removable cover design enables quick and flexible cable deployment through the transition section. Cables can be laid into the reducer easily, and the cover is then secured in place.

4.9 OEM/ODM Availability

Custom cable trunking reducers offer OEM/ODM options for tailored solutions, including custom width transitions, eccentric configurations, and special lengths to meet specific project requirements.

4.10 Professional Appearance

The clean, enclosed design of cable trunking reducers provides a professional, neat appearance that is especially valued in commercial buildings, hotels, hospitals, and other visible installations.

5. What Is Cable Trunking Reducer Used For?

Cable trunking reducer is widely used across many industries where cable volume changes along the routing path require transitions between different trunking widths.

5.1 Commercial Buildings (Offices, Hotels, Shopping Malls)

In commercial construction, main electrical feeders may reduce in size as they branch to smaller distribution panels. Reducers provide professional transitions at these points.

5.2 Residential Buildings

Apartment buildings and housing developments use cable trunking reducers where main electrical supplies reduce to individual unit feeders or smaller branch circuits.

5.3 Hospitals and Healthcare Facilities

Hospitals require organized cable management with transitions where main feeders reduce to branch circuits for patient rooms, operating theaters, and diagnostic areas.

5.4 Industrial Facilities

Factories and industrial plants use reducers where main power feeds branch to smaller equipment feeders or where cable volume reduces after dropping cables to machinery.

5.5 Power Generation and Distribution

In power plants and electrical substations, cable trunking reducers transition between main cable routes and smaller branch runs to individual equipment and control panels.

5.6 Data Centers (Enclosed Cable Routing)

While data centers often use perforated cable trays, some applications require enclosed trunking with reducers for security cables, fiber optic runs, or where additional protection is needed.

5.7 Educational Institutions

Schools and universities use cable trunking reducers for surface-mounted electrical runs where main feeders transition to smaller branch circuits in classrooms and laboratories.

5.8 Transportation Facilities

Airports, railway stations, and subway systems use cable trunking reducers where main cable routes transition to smaller branch runs for passenger areas, security systems, and lighting.

6. Installation Best Practices

6.1 Step 1 – Determine Reduction Point

Identify where cable volume reduces sufficiently to justify transitioning to a smaller trunking width. Plan the reducer location for efficient cable routing.

6.2 Step 2 – Select Reducer Type

Choose concentric reducer for overhead runs or when centered alignment is acceptable. Choose eccentric reducer for wall-mounted runs or when alignment with one side is required.

6.3 Step 3 – Calculate Reduction Length

Ensure the reducer length is adequate for the width reduction. Lanye recommends longer reducers for larger width reductions to maintain a gradual taper angle.

6.4 Step 4 – Install Support Brackets

Install supports within 300mm on each side of the reducer. For large reducers (over 200mm width reduction), install an additional support directly under the reducer midpoint.

6.5 Step 5 – Connect to Straight Sections

Connect the large end to the larger trunking section and the small end to the smaller trunking section using couplers. Ensure proper alignment before tightening.

6.6 Step 6 – Remove Covers

Remove the reducer cover and the covers of adjacent sections before installing cables to allow easy access through the transition.

6.7 Step 7 – Install Cables

Lay cables through the reducer, respecting minimum bend radii. For multiple cables, arrange them to avoid excessive crowding at the transition.

6.8 Step 8 – Secure Cover

After all cables are installed, replace the reducer cover and secure it with screws or clips.

6.9 Step 9 – Earth Continuity

For metal trunking systems, ensure electrical continuity across the reducer using earth bonding kits as required by local codes.

6.10 Installation Tips for Reducers

Always pull cables from larger to smaller trunking when possible
For eccentric reducers, maintain consistent alignment with wall or reference surface
Do not exceed recommended fill ratio in the smaller trunking section
For very wide reductions (e.g., 600mm to 200mm), consider staged reductions with two reducers

7. Cable Trunking Reducer Selection Guide

Large Width (mm)	Small Width (mm)	Recommended Reducer Length	Recommended Type
100	50	400mm	Concentric or Eccentric
100	75	400mm	Concentric or Eccentric
150	75	500mm	Concentric or Eccentric
150	100	500mm	Concentric
200	100	600mm	Concentric or Eccentric
200	150	600mm	Concentric
300	150	800mm	Eccentric (wall-mount)
300	200	800mm	Concentric
400	200	1000mm	Eccentric (wall-mount)
400	300	1000mm	Concentric

8. Why Buy From Lanye

8.1 Complete Cable Protection

Lanye cable trunking reducers provide full enclosure with smooth internal transitions, ensuring complete cable protection through width changes.

8.2 Engineered Taper Design

Lanye trunking reducers feature engineered taper angles and smooth transitions that protect cables and maintain system integrity.

8.3 Precision Manufacturing

All Lanye cable trunking reducers are precision-manufactured to match straight sections exactly, ensuring proper fit and alignment at both ends.

8.4 Custom Engineering Support

As a professional cable trunking manufacturer, Lanye can provide custom reducers based on project drawings, specific width transitions, and eccentric offset requirements.

8.5 OEM and ODM Service

Lanye supports OEM and ODM supply for distributors, contractors, and engineering buyers. Private labeling and custom configurations are available.

8.6 Quality Assurance

All Lanye cable trunking reducers undergo strict quality control including dimensional inspection, weld inspection, and finish verification.

9.Frequently Asked Questions (FAQ)

Q1: What is a cable trunking reducer?
A: A cable trunking reducer is a pre-fabricated fitting used to transition between different widths of cable trunking, allowing smooth cable flow from a larger trunking to a smaller trunking or vice versa. It features a fully enclosed body with removable cover for complete cable protection.

Q2: What is the difference between a concentric reducer and an eccentric reducer?
A: A concentric reducer is centered (both sides taper equally), suitable for overhead runs. An eccentric reducer is offset (one side straight, one side tapers), used for wall-mounted runs to maintain consistent alignment with the wall or reference surface.

Q3: Can a reducer be used for increasing width (small to large)?
A: Yes. Reducers can be used in both directions. When increasing width, pull cables from the smaller trunking into the larger trunking. The smooth taper works equally well in either direction.

Q4: Are covers included with cable trunking reducers?
A: Yes. All Lanye cable trunking reducers come complete with matching removable covers and cover fixing screws or clips.

Q5: Can I use a cable trunking reducer for power and data cables together?
A: Yes. For separation of power and data cables, Lanye recommends using trunking with dividers. Divider-compatible reducers are available with internal slots for continuous separation through the transition.

Q6: What materials are available for cable trunking reducers?
A: Lanye cable trunking reducers are available in pre-galvanized steel, hot-dip galvanized steel, stainless steel 304, and stainless steel 316.

Q7: What is the lead time for custom cable trunking reducers?
A: Standard sizes from Lanye typically ship in 5-7 business days. Custom width transitions, eccentric configurations, or special materials require 10-15 business days.

Q8: How do I support a cable trunking reducer?
A: Install supports within 300mm on each side of the reducer. For large reducers (over 200mm width reduction), install an additional support directly under the reducer midpoint.

Q9: Can I get a sample before placing a large order?
A: Yes. Lanye offers sample cable trunking reducers for customer evaluation. Please contact our sales team to discuss sample requirements, sizes, and lead time.

Q10: Are cable trunking reducers compliant with industry standards?
A: Yes. Lanye cable trunking reducers meet relevant IEC and NEMA standards. CE and ISO 9001 certified.