Product Definition
Related solutions: Explore our pultruded FRP profiles, FRP rebar, pultrusion machines, pultrusion dies.
A Right Hand (RH) Reducer is a specialized fitting that transitions an FRP cable ladder from a wider width to a narrower width, with the reduction occurring on the right side when viewed from the wide end toward the narrow end. The left rail remains straight and aligned, while the right rail tapers inward. Function: Width transition while maintaining left-side datum alignment Material: Pultruded Fiberglass Reinforced Plastic (FRP) Configuration: Asymmetric taper – right side reduction only
Technical Specifications
Material Properties
| Property | Value | Test Method |
|---|---|---|
| Resin System | Isophthalic Polyester / Vinyl Ester | – |
| Glass Fiber Content | 65-70% by weight | ASTM D2584 |
| Fiber Type | Continuous E-glass roving | – |
| Tensile Strength (Longitudinal) | ≥350 MPa (50,800 psi) | ASTM D638 |
| Flexural Strength | ≥400 MPa (58,000 psi) | ASTM D790 |
| Flexural Modulus | ≥18 GPa (2.6×10⁶ psi) | ASTM D790 |
| Impact Strength | ≥400 J/m (7.5 ft-lb/in) | ASTM D256 |
| Barcol Hardness | 40-50 | ASTM D2583 |
| Density | 1.8-2.0 g/cm³ | ASTM D792 |
Thermal & Environmental
| Parameter | Specification |
|---|---|
| Operating Temperature (Continuous) | -40°C to +120°C (-40°F to +248°F) |
| Heat Deflection Temperature | 98°C @ 1.82 MPa (208°F @ 264 psi) |
| Coefficient of Thermal Expansion | 2.7×10⁻⁵ /°C (15mm per 15°C per 10m) |
| UV Resistance | UV-stabilized gel coat, <5% degradation after 2000 hrs |
| Flame Spread Index | ≤25 (low flame-spread) per ASTM E84 |
| Smoke Development Index | ≤450 per ASTM E84 |
| Fire Rating | UL 94 V-0 (halogen-free option) |
Chemical Resistance (20°C, 90 days immersion)
| Medium | Resistance Rating |
|---|---|
| H₂SO₄ (50%) | Good |
| HCl (35%) | Good |
| NaOH (50%) | Good |
| NaCl (Saturated) | Good |
| Gasoline, Diesel | Good |
| Acetone | Good |
| MEK | Fair (vinyl ester recommended) |
Ratings are approximate; verify for your specific chemical, concentration, and temperature.
Standard Dimensions
Size Configurations
| Model Code | W₁ Wide (mm) | W₂ Narrow (mm) | Length L (mm) | Side Rail Height H (mm) | Weight (kg) |
|---|---|---|---|---|---|
| RH-900-600 | 900 | 600 | 870 | 100 / 150 | 12.5 / 15.8 |
| RH-900-450 | 900 | 450 | 945 | 100 / 150 | 13.2 / 16.7 |
| RH-900-300 | 900 | 300 | 1020 | 100 / 150 | 13.8 / 17.5 |
| RH-600-450 | 600 | 450 | 795 | 100 / 150 | 9.8 / 12.4 |
| RH-600-300 | 600 | 300 | 870 | 100 / 150 | 10.2 / 12.9 |
| RH-600-150 | 600 | 150 | 945 | 100 / 150 | 10.6 / 13.4 |
Dimensional Tolerance: ±10mm (±0.4″) Rung Spacing: 300mm (12″) standard | 150mm, 225mm available Rung Diameter: 16mm (5/8″) Side Rail Thickness: 6-8mm nominal
Custom Configurations Available
- Non-standard width transitions
- Side rail heights: 70mm, 200mm, 250mm
- Special centerline radii: 300mm, 600mm, 900mm
- Modified rung spacing for specific applications
Structural Performance Data
Load Capacity (Uniformly Distributed Load)
Test Configuration: Simply supported, span = 1.8m (6 ft)
| Ladder Width | Side Rail Height | Max UDL (kg/m) | Deflection @ Max Load | Safety Factor |
|---|---|---|---|---|
| 600mm | 100mm | 150 | L/150 | 3:1 |
| 600mm | 150mm | 240 | L/200 | 3:1 |
| 900mm | 100mm | 180 | L/150 | 3:1 |
| 900mm | 150mm | 290 | L/200 | 3:1 |
Note: Values based on NEMA FG-1 Class 20 loading. Actual capacity may vary with cable distribution, support spacing, and environmental factors.
Support Span Requirements
| Cable Load (kg/m) | Maximum Support Spacing |
|---|---|
| ≤50 | 2.4m (8 ft) |
| 51-100 | 1.8m (6 ft) |
| 101-150 | 1.5m (5 ft) |
| >150 | 1.2m (4 ft) or consult engineer |
Critical: Support required within 600mm (24″) of each reducer end.
Installation Technical Requirements
Fastening Specifications
| Component | Specification |
|---|---|
| Splice Plate Material | FRP or SS316 stainless steel |
| Bolt Size | M10 (3/8″) or M12 (1/2″) |
| Bolt Material | SS316 stainless steel (minimum) |
| Washer Type | Fiber or nylon washers required |
| Torque Specification | 15-20 Nm (11-15 ft-lb) |
| Thread Locking | Medium-strength threadlocker recommended |
Warning: Do not over-torque. FRP can crush under excessive compressive load.
Mounting Hole Pattern
- Pre-drilled holes: 4 holes per connection (2 each side rail)
- Hole diameter: 11mm (0.43″) for M10 bolts
- Hole spacing: Per NEMA FG-1 standard
- Edge distance: Minimum 25mm (1″) from hole center to edge
Support Bracket Requirements
| Parameter | Requirement |
|---|---|
| Material | FRP composite or SS316 |
| Contact Width | Minimum 50mm (2″) |
| Mounting Hardware | Corrosion-resistant (SS316) |
| Position | Within 600mm of fitting ends |
| Load Distribution | Use rubber/fiber pads to prevent point loading |
Thermal Expansion Allowance
Expansion Coefficient: 27 × 10⁻⁶ /°C Example Calculation:
- Cable ladder length: 10 meters
- Temperature change: 30°C
- Expected expansion: 10m × 27×10⁻⁶ × 30°C = 8.1mm
Recommendation:
- Runs >30m: Install sliding supports every 10-15m
- Penetrations: Allow 15mm clearance per 10m run
- Expansion joints: Every 50m on long outdoor runs
Compliance & Standards
International Standards
| Standard | Description | Compliance |
|---|---|---|
| NEMA FG-1 | FRP Cable Tray Systems | Yes |
| NEMA 16A | Electrical Cable Tray | Yes |
| UL 2026 | Cable Tray Systems | Optional certification |
| CSA C22.2 No.126 | Cable Tray (Canadian) | Yes |
| IEC 61537 | Cable Management Systems | Yes |
| ASTM E84 | Surface Burning Characteristics | low flame-spread |
| BS 476 Part 7 | Fire Propagation Test | low flame-spread |
Electrical Properties
| Property | Value |
|---|---|
| Dielectric Strength | >15 kV/mm |
| Volume Resistivity | >1×10¹³ Ω·cm |
| Arc Resistance | >180 seconds (ASTM D495) |
| EMI/RFI Effect | Transparent (non-conductive) |
Engineering Selection Guide
When to Specify Right Hand (RH) vs Left Hand (LH)
Use RH Reducer when:
- Obstacle (wall, column, equipment) is on the RIGHT side of the cable run
- Left side must maintain constant offset from reference line
- Cable tray approaches equipment from the left side
Critical: Verify orientation before ordering. FRP cannot be field-modified like steel systems.
Resin Selection Guide
| Environment | Recommended Resin | Reason |
|---|---|---|
| General industrial, outdoor | Isophthalic polyester | Cost-effective, good general properties |
| Strong acids (pH <3) | Vinyl ester | Strong acid resistance |
| Strong alkalis (pH >11) | Vinyl ester | Good caustic resistance |
| Hydrocarbon exposure | Isophthalic polyester | Adequate resistance, economical |
| Fire-sensitive areas | Halogen-free | Low smoke, reduced toxicity |
| High temperature (>100°C) | Vinyl ester | Higher HDT |
Transition Ratio Considerations
- Gradual transitions (900→600mm): Lower stress concentration, easier cable pulling
- Abrupt transitions (600→150mm): Space-efficient but requires careful cable management
- Multiple reducers: Use 2 stages for very wide transitions (e.g., 900mm→300mm can use 900→600→300)
Part Number Format
Structure: [Base Width W₁]-[End Width W₂]-RH-[Height H]-[Resin] Example: 600-300-RH-100-ISO
- 600mm wide end
- 300mm narrow end
- Right Hand configuration
- 100mm side rail height
- Isophthalic polyester resin
Resin Codes:
- ISO = Isophthalic polyester (standard)
- VE = Vinyl ester (chemical resistant)
- HF = Halogen-free (low smoke)
Quality Control Parameters
Every reducer is inspected for:
| Parameter | Acceptance Criteria |
|---|---|
| Dimensional accuracy | Within ±10mm tolerance |
| Surface finish | Smooth, no delamination or voids |
| Color uniformity | RAL color match ±ΔE<2 |
| Hole alignment | ±2mm positional tolerance |
| Resin cure | Barcol hardness 40-50 |
| Fiber content | 65-70% by weight |
Installation Workflow
- Pre-Installation
- Verify model number matches required transition
- Confirm RH orientation is correct
- Inspect for shipping damage
- Check mounting holes align with existing ladder
- Support Installation
- Position supports ≤600mm from each end
- Use anti-vibration pads between FRP and supports
- Ensure level installation (±5mm per meter)
- Reducer Connection
- Align pre-drilled holes with splice plates
- Insert fiber washers on both sides of connection
- Hand-tighten bolts in cross pattern
- Final torque to 15-20 Nm with torque wrench
- Apply thread-locking compound
- Final Checks
- Verify no gaps >3mm at connections
- Check for secure fastening (no movement)
- Confirm adequate thermal expansion clearance
- Document installation for maintenance records
FAQ
What is the right-hand reducer used for?
It connects cable ladder sections of different widths, allowing a smooth transition from wider to narrower sections while maintaining cable pathway continuity.
What sizes does it support?
It supports common cable ladder sizes from 150mm to 600mm widths. Exact compatibility depends on the ladder rung spacing and sidewall height.
How is it installed?
It bolts directly to the cable ladder side rails using stainless steel bolts or FRP fasteners. Installation is simple and requires no special tools.
Is it suitable for corrosive environments?
Yes. Made from pultruded FRP, it resists chemicals, saltwater, moisture, and industrial atmospheres.
Does it support heavy cable loads?
Yes. It maintains the structural integrity of the cable ladder system and supports heavy cable bundles without deformation.
Can it be used outdoors?
Yes. It is UV stabilized and weather resistant for long-term outdoor use.
Is it fire resistant?
Yes. FRP construction provides good flame retardancy and low smoke generation.
Are custom reducers available?
Yes. Custom sizes and configurations are available for special project requirements.
Technical Support
For engineering assistance, contact our technical team with:
- Project Details: Location, environment, application
- Cable Data: Total weight, conductor sizes, fill ratio
- Layout: Run length, elevation changes, support points
- Special Requirements: Temperature extremes, chemical exposure, fire rating
Load Calculation Service: Provide cable schedule for span and support analysis Custom Design: CAD drawings available for non-standard configurations
Note: This document provides general technical guidance. Actual product selection must consider specific site conditions, local codes, and safety requirements. Consult with a qualified engineer for final system design approval.
Request a quote: Need this product for your project? Contact us for a quote — our engineering team can help with specifications, custom sizes, and bulk orders.
