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Drawn Cup Needle Roller Bearings (HK/BK Series)
Home Needle Roller Bearings Drawn Cup Needle Roller Bearings (HK/BK Series)

HK0709 Drawn Cup Needle Roller Bearing | Thin-Walled & High Radial Stiffness | 7×11×9mm

HK0709 Drawn Cup Needle Roller Bearing | Thin-Walled & High Radial Stiffness | 7×11×9mm

The HK0709 is a high-performance drawn cup needle roller bearing with open ends, specifically engineered for designs where the housing bore cannot be used as a raceway for a needle roller and cage assembly, yet radial space is extremely limited. Featuring a small radial section height and high load-carrying capacity, the HK0709 utilizes a thin-walled, cold-formed outer ring made of premium steel. This unique construction allows for an exceptionally compact arrangement, making it the premier choice for engineers looking to maximize torque transmission and radial support within a minimal footprint.

HK0709 Drawn Cup Needle Roller Bearing 7×11×9mm Metric Needle Bearing | Optimized for Heavy Loads & Compact Enclosures

Designed for press-fit installation into the housing, the HK0709 eliminates the need for axial location, such as snap rings or shoulders, as the bearing is securely held by friction. This "HK" series bearing excels in applications with high-frequency oscillation or steady rotational loads. By utilizing precision-ground needle rollers, it distributes pressure evenly across the raceway, significantly reducing friction and extending the operational life of the assembly. Whether utilized in a high-speed planetary gear or a lightweight power tool, this bearing provides the rigid support necessary for precision mechanics.

HK0709 Drawn Cup Needle Roller Bearing | Thin-Walled & High Radial Stiffness | 7×11×9mm

Comprehensive Applications

Engineered for high-density performance across a wide spectrum of mechanical systems:

Automotive & Transportation
  • Vehicle Transmission Support Shafts
  • Alternator and Starter Motor End Plates
  • Steering Column Pivot Points
  • Brake System Actuators
Small Engines & Components
  • Two-Stroke Engine Crankshafts
  • Lawn and Garden Equipment Drives
  • Outboard Motor Gearboxes
  • Compact Chain Saw Rotors
Industrial & Household Automation
  • Textile Machinery Feeding Rollers
  • Portable Power Tool Internal Gearing
  • Kitchen Appliance Motor Shafts
  • Office Equipment Paper Feed Mechanisms

Key Performance Features

01. Cold-Formed Drawn Cup Technology

The outer ring is manufactured through a specialized deep-drawing process using high-grade sheet steel. This results in a thin-walled structure that offers high radial stiffness and load capacity without the weight or bulk of a machined bearing ring. It allows for the most efficient use of radial space in modern machine design.

02. Enhanced Needle Roller Guidance

The HK0709 features a robust cage that accurately guides the high-carbon chrome steel rollers. This design minimizes internal friction and allows for high-speed operation while ensuring that the lubricant is evenly distributed across the contact surfaces, preventing localized overheating and wear.

03. Seamless Press-Fit Integration

Because the outer ring is thin and flexible, it assumes the roundness and precision of the housing bore once pressed into place. This simplifies the manufacturing process and ensures a secure, interference-fit that maintains its position even under significant vibration or high-speed cycles.

Technical Specifications

Bearing Type Drawn Cup Needle Roller Bearing
ISO Dimension Series Metric HK Series
Basic Designation HK0709
Suffix ZZ (Double Metal Shields)
Bore Diameter (d) 7 mm
Outer Diameter (D) 11 mm
Width (B) 9 mm
Cage Material Reinforced Pressed Steel or Polyamide
Material (Ring & Rollers) GCr15 Chrome Steel (SAE 52100)
Precision Class P0 (Standard) / P6 or P5 Available
Dynamic Load Rating (Cʳ) Approx. 3,850 N
Static Load Rating (C₀ʳ) Approx. 4,200 N
Limiting Speed (Grease) 28,000 RPM
Limiting Speed (Oil) 42,000 RPM
Weight (approx.) 3.10 grams

Interchange Part Numbers

Direct cross-references for global procurement and technical compatibility:

  • SKF: HK 0709
  • NMB: HK0709
  • NSK: HK0709
  • NTN: HK0709
  • FAG: HK 0709
  • KOYO: HK0709

Design & Configuration

At Welink Bearing, we leverage 15 years of B2B expertise to provide precision needle roller solutions that withstand the rigors of heavy-duty industrial use. The HK0709 is a testament to our commitment to high-precision, space-saving technology. For our OEM partners, we offer custom production runs featuring specialized heat treatments for the outer ring, specific cage materials for chemical resistance, and unique internal clearance settings to ensure the bearing performs perfectly within your specific housing tolerances.

"Unlock maximum radial performance in the smallest envelopes with the HK0709 drawn cup needle bearing—precision you can trust."

Related Products

Industrial HK0709 replacement bearing compatible with SKF and INA for power tools and textile machinery
HK0709 Drawn Cup Needle Roller Bearing | Thin-Walled & High Radial Stiffness | 7×11×9mm

The HK0709 is a high-performance drawn cup needle roller bearing with open ends, specifically engineered for designs where the housing bore cannot be used as a raceway for a needle roller and cage assembly, yet radial space is extremely limited. Featuring a small radial section height and high load-carrying capacity, the HK0709 utilizes a thin-walled, cold-formed outer ring made of premium steel. This unique construction allows for an exceptionally compact arrangement, making it the premier choice for engineers looking to maximize torque transmission and radial support within a minimal footprint.

Details

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