New Hampshire Ball Bearings, Inc. (NHBB) is a leading manufacturer of precision bearings and complex bearing assemblies for the global aerospace, defense, medical, and high technology markets. The company is a subsidiary of MinebeaMitsumi Inc. and an integral part of the global brand, MinebeaMitsumi Aerospace. NHBB's diverse product mix includes precision miniature and instrument ball bearings, large ball and roller bearings for aircraft engines, and specialized rod end and spherical bearings for diverse aircraft applications.
National Precision Bearing is the source for NHBB aircraft bearing needs and system solutions. NPB maintains stock on NHBB products found in virtually every sub-system on both military and commercial aircraft—everywhere from engine mainshafts and gearboxes to airframe control systems, landing gear, engine mounts, APUs, navigation systems and more.
NPB also maintains vast NHBB stock for defense, medical, and dental industry solutions, including:
Key NHBB Products
Airframe Control Bearings
Medical & Dental Bearings
National Precision Bearing is the largest stocking distributor of NHBB brand miniature and instrument bearings. NHBB bearings feature high precision manufacturing technology, process control systems and a comprehensive product and development facility. NPB stocks the widest range of NMB standards and custom configurations for medical, automotive, printer, motor, packaging, automation, and other precision industrial applications.
National Precision Bearing stocks NHBB miniature and instrument bearings ranging from 1mm bore to 26mm outside diameter.
Other NHBB bearing options and configurations include:
Chrome and Stainless Steel
Radial and angular contact bearings (inch and metric)
Crown, ribbon, and non-metalic cages (high speed)
Flanged and unflanged bearings
Shielded, sealed, non-contact seal, and open bearings
Extended inner race
Premium race and low noise options
High to ulta-precision tolerances (ABEC 5, 7 & 9)
Duplex and super duplex configurations
Modified dimensions (special bore, OD or widths)
Custom greases, oils, and re-lubrication on request
When required, NHBB will customize a bearing solution to perform under extreme operating conditions, such as ultra high speeds, low lubrication, low noise and vibration or corrosive environments.
Airframe Control Bearings
Designed for reliable performance, NHBB's full line of Airframe Control Bearings are manufactured and inspected in accordance with Aerospace Standards AS7949. They possess a low coefficient of friction and low torque, which are suitable performance factors for applications with oscillating motion or slow intermittent rotation. Precision construction assures excellent radial and axial positioning. SAE 52100 chrome steel with cadmium plating is standard; 440C stainless steel is also available. Unless otherwise specified, these bearings have a full ball complement design.
NHBB manufactures standard and custom designed ball bearing solutions for a myriad of aerospace, defense, dental, high tech, and medical applications. Our product lines feature inch and metric series ball bearings ranging in size from 0.1250 in. to 11 in. O.D.
Spherical bearings from NHBB address the unique operating parameters faced by engineers in the aerospace, defense, and other high technology industries. We customize bearings to work outside the standard spectrum of load, temperature, fatigue resistance, and angular misalignment.
Our Astro Division developed the first liner system for spherical bearings that qualifies to the threshold of 100,000 cycles for bearing life (industry standard AS81820 Type 'A'). Our customized and standard bearings also include swaged, split ball, spit race, fracture race, snap assembled, and loader slot.
NHBB understands the importance of choosing materials to match your operating environment. We design bearings using cadmium-free stainless steel, titanium, Inconel® 718 (a nickel-chromium based super-alloy for high-temperature applications), and Stellite™ (cobalt and nickel-based alloy), in both metal-to-metal and self-lubricating PTFE-lined versions.
Rod End Bearings
Custom rod end bearings from NHBB are the choice of engineers dealing with unique geometries and dimensional constraints. NHBB customizes rod ends to hold heavier loads, operate at temperature extremes, provide stronger fatigue resistance and meet requirements for angular misalignment. We also offer ball bearing rod ends for low friction, low backlash applications.
For both custom and standard applications, we understand the importance of choosing materials to match your operating environment. Our stainless steel cadmium-free rod ends are the industry’s first to meet ACBG standards AS81935/6, /7, /8 and /9, offering equivalent dimensions and performance to cadmium-plated rod ends without the potential risks and regulatory burdens—including European Union environmental regulations—associated with cadmium.