More Than a Supplier — Your Reliable Bearing Partner.
The rod end body is equipped with left-hand (LH) or right-hand (RH) internal threads. The steel ball is encased in an injection-molded nylon liner and press-fitted into the rod end body. Suitable for high load, high-frequency oscillation, and impact applications.
The KFX Series is a maintenance-free rod end bearing with internal threads (left-hand/right-hand available). It features an injection-molded nylon liner pressed into the rod end body, eliminating the need for regular grease injection. The rod end body is made of alloy steel with chrome plating for a polished finish and high strength. The ball is constructed from heat-treated bearing steel (hardness HRC 58-62) with hard chrome plating. Strictly adhering to inch dimension standards, it ensures precise thread accuracy and seamless assembly with overseas inch-equipment. Ideal for high-load, high-frequency oscillation and impact applications, it delivers reliable performance and long service life for heavy-duty automation and construction machinery.
Core Advantages
1. Maintenance-Free Self-Lubricating Design
The self lubricating spherical rod end bearing features a durable nylon liner, providing continuous lubrication, reduced friction and long service life with minimal maintenance.
2. High-Strength Alloy Steel Construction
The KFX rod end bearing adopts a high-strength alloy steel body with chrome-plated protection, offering excellent wear resistance and corrosion resistance in demanding applications.
3. Superior Load Capacity & Durability
The heat-treated bearing steel ball delivers outstanding load resistance and stable performance, making the KFX series rod end bearing suitable for heavy-duty mechanical linkages.
4. Precision Threaded Connection
The KFX metric rod end bearing is manufactured with accurate internal thread dimensions, ensuring easy installation, secure fastening and reliable equipment compatibility.
5. Reliable Solution for Global Applications
Designed according to metric standards, the KFX rod end bearing provides precise fitting and dependable performance for international machinery and industrial systems. Gonuo, as an OEM rod end bearing manufacturer, supports customized solutions for different application requirements.

Sliding Contact Pair: | Steel / Injection-Molded Nylon Liner |
Rod End Body Material: | Alloy steel; Chrome plated and polished; Tensile strength ≥ 1200 MPa |
Ball: | Bearing Steel, Heat Treatment, Hardness HRC 58-62, Hard Chromium Plated |
| Bearing number | Dimensions | kN Load Ratings | g Weight | |||||||||
| d | B | C₁ | h₁ | d₂ | d₅ | W | dₖ | L₃ min | d₃ ≈ | |||
| KFX3 | 4.826 | 7.920 | 6.350 | 26.970 | 15.880 | 10.310 | 7.920 | 11.100 | 14.270 | 10-32 | 16.500 | 17 |
| KFX4 | 6.350 | 9.530 | 7.140 | 33.320 | 19.050 | 11.910 | 9.530 | 12.700 | 19.050 | ¼-28 | 27.400 | 27 |
| KFX5 | 7.938 | 11.100 | 8.740 | 34.930 | 22.230 | 12.700 | 11.100 | 15.880 | 19.050 | ⁵/₁₆-24 | 33.650 | 42 |
| KFX6 | 9.525 | 12.700 | 10.310 | 41.280 | 25.400 | 17.450 | 14.270 | 18.260 | 23.800 | ⅜-24 | 42.060 | 69 |
| KFX7 | 11.113 | 14.270 | 11.100 | 46.020 | 28.580 | 19.050 | 15.880 | 20.620 | 26.970 | ⁷/₁₆-20 | 45.600 | 90 |
| KFX8 | 12.700 | 15.880 | 12.700 | 53.980 | 33.320 | 22.230 | 19.050 | 23.800 | 30.150 | ½-20 | 67.920 | 149 |
| KFX10 | 15.875 | 19.050 | 14.270 | 63.500 | 38.100 | 25.400 | 28.580 | 28.580 | 38.100 | ⅝-18 | 79.520 | 216 |
| KFX12 | 19.050 | 22.230 | 17.450 | 73.030 | 44.450 | 28.580 | 25.400 | 33.320 | 44.450 | ¾-16 | 124.420 | 328 |
| KFX14 | 22.225 | 22.230 | 19.430 | 85.730 | 50.800 | 33.020 | 28.580 | 34.930 | 47.630 | ⅞-14 | 199.260 | 467 |
| KFX16 | 25.400 | 34.930 | 25.400 | 104.780 | 69.850 | 41.280 | 38.100 | 47.630 | 53.980 | 1¼-12 | 337.400 | 964 |
Tips:
If the thread is left-hand (LH), the letter "L" must be appended to the bearing designation, e.g., KFX 10L.
In inch dimension series.
Industrial Automation: The KFX series rod end bearing is widely used in packaging machinery, textile equipment, printing machines and automated production systems requiring precise motion control.
Construction Machinery: The durable design of the KFX rod end bearing makes it suitable for excavators, loaders and other heavy equipment linkage systems.
Material Handling: Pivot points for conveyors, lifts, and automated guided vehicles.
Off-Highway Vehicles: Steering and throttle linkages for tractors and agricultural implements.
Hydraulic & Pneumatic Cylinders: The KFX metric rod end bearing provides reliable connection solutions for hydraulic cylinders and pneumatic actuators requiring smooth movement and stable performance.
When you choose Gonuo, you benefit from our integrated manufacturing and quality system, directly addressing the core concerns of overseas buyers.
Gonuo specializes in producing high-quality KFX series rod end bearing products with integrated manufacturing processes, from material selection and machining to final inspection.
As an experienced OEM rod end bearing manufacturer, Gonuo provides customized solutions based on drawings, samples and specific application requirements.
Each KFX rod end bearing undergoes comprehensive inspection to ensure dimensional accuracy, stable performance and consistent quality for every batch.
Leveraging our mature supply chain and large-scale production, we offer stable supply, competitive pricing, and flexible MOQs (bulk or small batches). Our fast replenishment system aligns with your production schedule, helping you reduce procurement costs without compromising quality.
For over 20 years, Gonuo has been a trusted brand in precision transmission components, exporting to North America, South America, Russia, and beyond. Based in Ningbo, China, we are committed to consistent quality and long-term partnerships, serving industries worldwide.
Whatsapp: +86-18868534347
E-mail: lucy@gonuo-hardware.com
ADD: 904 No.426, Xueshi Road, Yinzhou , Ningbo, China.
Mobile: 0086-18868534347