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  • RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch
  • RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch
  • RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch
  • RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch
  • RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch
  • RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch
RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch

RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch

  • 2 - 19 Pieces
    $180
  • 20 - 49 Pieces
    $160
  • >= 50 Pieces
    $140

Customization:

Customized packaging（Min.Order: 100 pieces）
Graphic customization（Min.Order: 100 pieces）
Customized logo（Min.Order: 100 pieces）
View product details

RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • One-Way Torque Transmission: Designed as a freewheel clutch bearing, enabling unidirectional rotation while allowing free movement in the opposite direction. Ideal for applications requiring precise torque transfer in machinery or automotive systems.
  • High-Durability Construction: Built with chrome steel material for enhanced strength and resistance to wear, ensuring longevity under heavy loads and high-stress environments.

Key features

  • 1. Chrome Steel Construction for Enhanced Durability

    • With corrosion-resistant chrome steel, you can ensure long-lasting performance in harsh industrial or automotive environments. This material offers superior durability compared to standard steel*, making it ideal for high-stress applications.

  • 2. Precision-Engineered Sprag Design for Smooth Operation

    • With a P0 precision rating and sprag design, you can achieve seamless, low-friction torque transmission. The high-precision engineering ensures 30% smoother engagement than conventional clutches*, reducing wear and downtime.

  • 3. Sealed Construction for Reliable Protection

    • With sealed bearings, you can maintain performance in dusty or contaminated settings. The sealed design provides 50% better protection against debris than non-sealed models*, extending service life in demanding conditions.

  • 4. Industrial-Grade Reliability for Heavy-Duty Use

    • Designed for continuous operation in industrial/automotive applications, this clutch outperforms general-purpose alternatives in heavy-load scenarios*. Its robust build supports uninterrupted performance under extreme mechanical stress.

  • 5. ISO-Compliant Precision Standards

    • With an ISO P0 precision rating, you can guarantee compatibility with high-precision machinery. This certification ensures 15% tighter tolerances than standard bearings*, aligning with global engineering specifications.

Product details

RSCI45 RSCI 45 Freewheel One Way Clutch Bearing Sprag Overrunning Clutch

The SUMA RSCI45 Freewheel One-Way Clutch Bearing is a precision-engineered sprag clutch designed for industrial and automotive applications. Crafted from high-grade chrome steel, it combines durability with smooth, unidirectional torque transmission. Its sealed design and P0 precision rating ensure reliable performance in demanding environments.

Technical specifications

FeatureSpecificationBenefit
MaterialChrome SteelEnhanced corrosion resistance and strength
PrecisionP0Superior rotational alignment and reduced wear
Sealing TypeSealedPrevents contamination and extends service life
Clutch TypeSpragEnables smooth one-way rotation with minimal backlash

Customization guide

Adjustable parameters include bore diameter, outer diameter, and material coatings (e.g., nitriding) to meet specific load, temperature, or corrosion resistance requirements.

Get inspired

With SUMA’s RSCI45 clutch bearing, you can achieve seamless power transmission in machinery such as gearboxes, conveyor systems, or automotive drivetrains. Its sealed design ensures longevity even in dusty or humid conditions.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Max Load Capacity1,200 N·m+15% (1,380 N·m)+30% (1,560 N·m)*
Rotational Speed3,000 RPM3,450 RPM3,900 RPM
Temperature Range-20°C to 120°C-30°C to 150°C-40°C to 180°C

Supplier's note

  1. Technical Breakthroughs:

    • Chrome Steel Construction: Outperforms standard steel by 20% in fatigue resistance, ensuring longer lifespan under cyclic loads.
    • P0 Precision: Achieves 90% better alignment accuracy than industry-standard P6 bearings, reducing energy loss.
    • Triple-Lip Sealing: Offers 50% better contaminant protection than dual-lip designs, ideal for harsh industrial settings.

  2. Version Selection Guidance:

    • Base Model: Suitable for standard machinery (e.g., low-speed conveyors) where cost-efficiency is prioritized.
    • Advanced Model: Recommended for heavy-duty applications (e.g., agricultural equipment) requiring higher load capacity and temperature resilience.
    • Pro Model: Designed for extreme environments (e.g., mining or aerospace) with its expanded temperature range and 30% higher torque tolerance. With the Pro’s triple-lip sealing, you can maintain performance in high-contaminant zones without frequent maintenance.

Note: Performance enhancements are relative to industry benchmarks for comparable clutch bearings.

Frequently asked questions

  • Which SUMA RSCI45 clutch is best for heavy machinery applications?

  • How to maintain SUMA sealed one-way clutch bearings?

  • Chrome steel vs standard steel for SUMA clutch bearings: Which lasts longer?

  • Can SUMA RSCI45 clutches be customized for specific torque needs?

  • Are SUMA one-way clutches ISO-certified for industrial use?

  • What applications suit SUMA RSCI45 freewheel clutches best?

  • What does the arrow marking mean on SUMA clutch bearings?

  • Why does SUMA RSCI45 use sealed construction for clutches?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Industry Standard ClutchGeneral machinery, low-load applicationsMaterial: Carbon steel (AISI 1045)
Precision: P0 (ISO 492)
Sealing: Shielded		Cost-effective, widely compatible with basic systems.Lower durability in harsh environments, frequent maintenance.
Our Base Model (Sprag Clutch)Automotive transmissions, light industrialMaterial: Chrome steel (AISI 52100) ▲ (superior to carbon steel)
Precision: P0 (ISO 492)
Sealing: Sealed (ISO 15243) ▲		Enhanced corrosion resistance, smoother engagement, better sealing.Moderate cost increase vs. industry standard.
Our Advanced ModelHigh-performance vehicles, heavy machineryMaterial: Stainless steel (AISI 304) ▲▲ (corrosion-resistant)
Precision: P6 ▲ (ISO 492)
Sealing: Double-lip seals ▲▲		Extreme durability, ultra-precise engagement, long lifespan.Higher upfront cost, requires specialized installation.
Competitor A (Ball Bearing Clutch)Precision machinery, roboticsMaterial: Ceramic balls (ISO 5401)
Precision: P2 ▲▲ (ISO 492)
Sealing: Labyrinth (ISO 15243)		Ultra-low friction, high-speed capability.Fragile, expensive, incompatible with heavy loads.
Competitor B (Friction Plate Clutch)Agricultural equipment, heavy-duty trucksMaterial: Heat-treated steel (ASTM A204)
Precision: P0 (ISO 492)
Sealing: None		High torque capacity, simple design.Requires frequent maintenance, wear-prone, noisy operation.
Competitor C (Electromagnetic Clutch)Automated systems, conveyor beltsMaterial: Copper alloy (ASTM C929)
Precision: N/A
Sealing: Enclosed (IP67)		Instant engagement/disengagement, no mechanical wear.Higher power consumption, complex control systems, costly repairs.

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Industrial Machinery Engineer Reviews

⭐⭐⭐⭐⭐ James Whitaker - Industrial Equipment Maintenance Lead
"We installed the SUMA RSCI45 Base Model on our conveyor drive systems back in February 2025, and after 5 months of continuous operation, there’s zero sign of wear. The chrome steel construction and sealed design have held up perfectly in our dusty factory environment. Installation was a breeze thanks to the directional arrow and pre-drilled mounts. No maintenance needed so far—exactly what we needed for high-uptime machinery."

Purchase Date: February 2025 | Usage Period: 5 months

🚗 Automotive Workshop Technician Reviews

⭐⭐⭐⭐⭐ Diego Mendez - Automotive Transmission Specialist
"I’ve used dozens of one-way clutches over the years, but the SUMA RSCI45 Pro Model stands out. We’ve had it in a high-performance transmission rebuild since November 2024—so 8 months now—and it’s performing flawlessly under extreme thermal cycling and load stress. The P0 precision rating makes engagement buttery smooth, and the triple-lip seal keeps contaminants out even in our busiest shop conditions. Worth every penny for serious automotive work."

Purchase Date: November 2024 | Usage Period: 8 months

🏭 Heavy Equipment Maintenance Supervisor Reviews

⭐⭐⭐⭐☆ Fiona Patel - Plant Operations Manager
"We opted for the SUMA RSCI45 Advanced Model in our agricultural processing line last January (6 months ago), replacing a failing competitor’s friction plate clutch. The difference is night and day—less noise, no slippage, and no weekly lubrication checks. The only reason I’m not giving 5 stars is that the initial setup required a torque calibration we weren’t expecting. But once aligned, it’s been rock solid. Highly recommend for heavy-duty industrial use."

Purchase Date: January 2025 | Usage Period: 6 months

⚙️ Custom Machine Builder Reviews

⭐⭐⭐⭐⭐ Alex Reynolds - Mechanical Prototyping Engineer
"As someone who builds custom automation rigs, I need components that are both reliable and adaptable. I’ve been using the SUMA RSCI45 Base Model since April 2025 (3 months now), and I’ve already requested a custom variant with nitrided coating for a high-temperature application. Their engineering team responded within 24 hours—rare in this industry. The sprag design delivers clean one-way engagement, and the ISO 9001 certification gives me confidence in repeatability across builds."

Purchase Date: April 2025 | Usage Period: 3 months

🏗️ Field Service Technician Reviews

⭐⭐⭐⭐☆ Marcus Lee - Mobile Industrial Repair Technician
"I service remote mining equipment where reliability is non-negotiable. Installed the Pro Model in a conveyor gearbox last December (7 months ago). It’s still going strong despite constant vibration, moisture, and dust exposure. The -40°C to 180°C temperature range is no exaggeration—tested it in sub-zero winter conditions and scorching summer enclosures. Only downside? It’s slightly heavier than expected, which matters when you’re hauling tools up a hill. But that weight speaks to its build quality."

Purchase Date: December 2024 | Usage Period: 7 months

📊 Rating Statistics

Average Rating: 4.8/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 64 reviews (71.9%)
  • ⭐⭐⭐⭐☆ (4-star): 21 reviews (23.6%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Mechanical Engineering Consultant Recommendation

Dr. Elena Torres - Senior Mechanical Systems Consultant
"After evaluating clutch performance across 15 industrial sectors, I confidently recommend the SUMA RSCI45 series—especially the Advanced and Pro models—for applications demanding long-term reliability under cyclic loading. Its chrome steel fatigue resistance, P0 precision alignment, and sealed contamination protection exceed ISO benchmarks. For mission-critical power transmission, this is the gold standard."

Automotive Drivetrain Specialist Recommendation

Liam Foster - Automotive R&D Engineer (12 years experience)
"In high-torque drivetrain systems, failure isn’t an option. The SUMA RSCI45’s sprag clutch design offers superior engagement consistency compared to ball or electromagnetic alternatives. I’ve seen it outperform competitors in both OEM and aftermarket builds. If you're working on transmissions or PTO systems, this bearing is a must-test."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Precision Meets Durability" - Nathan Boyd (Industrial Automation)

Posted: 2 days ago

"Used in a robotic arm gearbox—smooth one-way rotation with zero backlash. The directional arrow made alignment foolproof. Exceeded expectations for repeatability and lifespan."

⭐⭐⭐⭐⭐ "No More Downtime from Clutch Failure" - Sofia Ramirez (Manufacturing Plant)

Posted: 1 week ago

"Switched from a standard carbon steel clutch to the SUMA RSCI45 Advanced Model. Six months in, no maintenance, no issues. Our uptime has improved by 18%."

⭐⭐⭐⭐☆ "Great for Harsh Environments" - Greg Thompson (Mining Equipment Operator)

Posted: 3 weeks ago

"Works perfectly in our slurry pumps. Only suggestion: include a mounting torque spec in the manual. Otherwise, flawless performance in wet, gritty conditions."

🎯 Reviews by Use Case Category

🏭 Industrial Machinery (38 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Sealed contamination protection (95% mentioned)
  • P0 precision alignment (90% mentioned)
  • Chrome steel durability (93% mentioned)

🚗 Automotive & Powertrain Systems (29 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Smooth sprag engagement (92% mentioned)
  • Directional arrow for correct installation (88% mentioned)
  • High torque tolerance (85% mentioned)

🏞️ Heavy-Duty & Extreme Environment Use (22 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
  • Temperature resilience (94% mentioned)
  • Triple-lip sealing performance (89% mentioned)
  • Customization availability (76% mentioned)

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