47.5x18 CF FIXED PROP

Product name: 47.5*18 inch Ultra light carbon fiber integrated CW/CCW Propeller

Model: 47.5*18Y

Diameter (inches): 47.5

Pitch (inches): 18

Single net weight: 463g

Thrust Limitation: ≤85kg

Optimum RPM: ≤3700r/min

Working ambient temperature:   -40℃~+60℃

Storage temperature:  -10℃~+40℃

Engineered for demanding industrial applications, the RAYI 47.5x18 carbon fiber propeller delivers the optimal balance of ultra-low weight, exceptional thrust, and structural rigidity that heavy-lift multirotor UAVs require. Whether powering logistics drones, aerial survey platforms, firefighting systems, or manned-adjacent aircraft, this 47.5x18 carbon fiber propeller is built to perform in conditions where reliability is non-negotiable.

The 47.5-inch diameter combined with an 18-inch pitch makes this propeller particularly suited for heavy-lift multirotors operating at lower RPM ranges (optimum ≤3,700 RPM). The high-pitch-to-diameter ratio generates exceptional thrust per revolution — meaning your motors work more efficiently, draw less current, and your battery lasts longer per flight cycle.

For platforms carrying payloads above 30 kg or targeting MTOW configurations above 80 kg, this 47.5x18 carbon fiber propeller sits in the ideal performance window: maximum static thrust ≤85 kg per propeller, with aerodynamic efficiency 7% above conventional blade profiles at equivalent diameter.

Material & Manufacturing Advantage

3K Carbon Fiber Weave — The Foundation of Every RAYI Prop

RAYI uses 3K plain-weave carbon fiber cloth with a 38% carbon fiber content ratio — higher than most OEM-grade competitors in the same price tier. What this means in practice:

• Fatigue resistance is measurably improved over standard T300 fiber layups, extending serviceable life under cyclic loading conditions typical in commercial UAV operations

• Moment of inertia is reduced, making the aircraft more responsive to throttle inputs and flight controller corrections

• Water absorption rate is extremely low — the modified resin matrix resists moisture ingress that can silently degrade composite integrity over months of field use

• Matte surface finish minimizes glare during low-altitude operations and measurably reduces aerodynamic surface friction versus gloss-finished blades

CW / CCW Configuration

On multirotor platforms, propeller rotation direction determines torque cancellation between opposing motor pairs. Using matched CW (clockwise) and CCW (counter-clockwise) propellers is mandatory for yaw stability. RAYI supplies the 47.5×18 as a proper CW/CCW pair, precision-matched in weight and blade geometry, so both sides of your drivetrain perform identically.

OEM, ODM & Custom Propeller Services

RAYI operates as a direct manufacturer, not a trading company. 

• Custom diameter and pitch: We currently manufacture carbon fiber propellers from 12 inches through 72 inches in integrated (fixed) configurations

• Custom hub patterns: Match your specific motor bolt circle diameter and shaft configuration

• Custom blade count: 2-blade and 3-blade variants available at volume

• Custom weight targets: Modify layup schedule for extreme ultralight or high-stiffness requirements

• OEM branding: Private label production available with your company identity

• MOQ flexibility: Suitable for both prototype quantities and production-scale orders

Our full size range includes: 12×4, 14×8, 15×5, 16×6, 16×8, 17×6, 22×7.8, 24×15, 28×12, 30×14, 36×18, 40×13, 42×14, 47.5×18, 50×19, 52×19, 57×19, 60×19, 64×20, 72×31 — and beyond by request.

Frequently Asked Questions

Q: What motors are compatible with the RAYI 47.5x18 carbon fiber propeller?

A: This propeller is optimized for high-torque, low-KV brushless motors typically in the 100–150 KV range at 12S–24S voltage configurations. Common compatible motor classes include industrial U-type and P-type motors from major Chinese manufacturers. Contact us with your motor specifications for a compatibility confirmation.

Q: Can this propeller be used on a fixed-wing platform?

A: Yes. The 47.5×18Y model is specified as compatible with both multirotor and fixed-wing applications. For pusher or tractor configurations, specify your motor shaft direction when ordering.

Q: What is the difference between the integrated (fixed) and folding versions?

A: Integrated propellers like the 47.5×18Y offer higher rigidity and better dynamic balance stability, making them preferred for heavy-lift platforms where structural stiffness is critical. Folding propellers offer portability benefits but introduce additional mechanical complexity and potential flex points. For platforms above 30 kg MTOW, fixed-hub configurations are generally recommended.

Q: How should I store the propellers between flight operations?

A: Store in a dry environment between -10°C and +40°C, away from UV exposure and chemical vapors including SO₂, NO₂, Cl₂, organosilicon compounds, and phenols. Humidity should remain below 80%. Keep blades unsupported (do not store with weight resting on blade tips).

Q: Do you accept sample orders before bulk procurement?

A: Yes. Sample orders can be shipped via international express (DHL, FedEx, UPS). Bulk orders are typically shipped by sea or land freight. Contact our team to initiate a sample request.

Why Choose RAYI as Your Carbon Fiber Propeller Supplier?

RAYI (Jiyuan Rayi Innovation Science Technology Co., Ltd.) is a propeller manufacturer operating from Jiyuan, Henan Province, China — one of China's emerging UAV component manufacturing clusters. Our value proposition is straightforward:

Direct factory pricing. No distributor margin. No trading company markup. The price you negotiate is the factory gate price.

Modified material formulations. We invest in material science rather than simply rebadging commodity composites. Our 38% carbon fiber content matrix and low water-absorption resin system are proprietary to RAYI's product line.

Responsive customization. Most custom propeller projects move from specification to prototype in under 30 days. We support the full engineering dialogue — from airfoil selection to hub pattern to surface treatment.

Recognized cost-to-performance ratio. Within the Chinese UAV supply chain, RAYI propellers are positioned as the high-quality, price-competitive alternative to Tier-1 brands — the choice for integrators who need performance without premium brand pricing.

Get a Custom Quote for 47.5x18 Carbon Fiber Propellers

Looking for a high-performance 47.5x18 carbon fiber propeller for UAVs, agricultural drones, industrial drones, or heavy-lift aerial platforms? Our carbon fiber propellers are engineered for exceptional strength, lightweight performance, and aerodynamic efficiency, helping improve flight stability, thrust output, and energy efficiency in demanding applications.

Contact us today to discuss your project requirements and receive expert technical support.