China Professional N QD Type Bushings with Great quality

N QD Type Bushings

Bushing is a mechanical component that plays an important role in many different fields. In addition to being very practical, it helps reduce noise, vibration, wear and provides anti-corrosion properties. These properties aid mechanical equipment in various ways, including making it easier to maintain and reducing its overall structure. The functionality of an enclosure depends on its purpose and environment.

A bushing is a bearing that minimizes friction and wears within the transmission. boring. It is also used as housing for shafts, pins, hinges, or other types of objects. This N-type bushing is a high quality, extremely durable, and high precision product made of solid steel. What really sets these N QD-style bushings apart is the extensive quality control program to ensure you receive a consistent and high-quality product. N bushings have a wide range of applications and are most often used with sprockets, pulleys, and more! Plus, we’re your one-stop-shop for almost any powertrain product! For more information or to get a great quote, please contact us and we will be happy to assist you!

What Is a QD Bushing?

QD bushings are a common bearing type that can be installed easily and quickly. These bushings are flanged apart and tapered to clamp securely to the shaft. They are usually mounted with lock washers and cap screws and have a progressive taper of 3/4 inch per foot. Type QD bushings are easily identified by the letters in the part number. When installing the QD bushing, be sure to install it with a gap between the sprocket hub face and the inner diameter of the sprocket bushing.

Dimensions of N QD Type Bushings

  • Bushing Type: N
  • Bore Size: 100mm、115mm、120mm、2-1/2″、2-11/16″、2-3/4″、2-5/8″、2-7/16″、2-7/8″、3″、3-3/8″、2-5/8″、2-7/16″、2-7/8″、3″、3-1/4″、3-1/8″、3-11/16″、3-15/16″、3-3/16″、3-3/4″、3-3/8″、3-5/8″、3-7/16″、3-7/8″、4“、4-1/4″、4-3/4″、4-3/8″、4-7/16″、4-7/8″、5“、51/2″、51/4″、515/16″、5-3/16`”、5-3/4″、5-7/16`”、6`”、65mm、65mm、70mm、75mm、80mm、85mm、90mm、95mm、
  • Dimension (A): 1.500″
  • Dimension (B): 7.000″
  • Dimension (D): 10.250″
  • Dimension (E): 6.625″
  • Dimension (F): 6.250″
  • Dimension (G): 0.250″
  • Dimension (L): 8.125″
  • Bolt Circle: 8.500″
  • Set Screw Size: 3/4-10
  • Weight: 57.00 LBS


Type N QD bushings are used in a wide range of applications and are available in a variety of bore sizes. We offer a full line of stock high-quality precision QD bushings that are manufactured to be extremely durable and high strength. What sets these N bushings apart is a rigorous quality control process and high-quality materials. This allows you to always get a consistent quality product when ordering from us! We strive to provide you with maximum customer service and value for money, ensuring you are a satisfied customer. For more information or to obtain a custom or high-volume quote, please contact us and we will be happy to assist you!

Standard Mounting

1. Make sure the cone on the bushing and the inside of the driven product is clean and free of oil or any anti-seize lubricant.
2. Slide QD bushing on a shaft, flange end first, then assemble key.
3. Place the QD bushing on the shaft. Use only a standard Allen key to tighten the set screw on the key (hand-tight). Don’t push too hard.
4. Slide the large end of the sprocket or other part taper hole into place over the cone, aligning the drilled bolt holes on the sprocket or other part with the taper holes in the bushing flange. Then assemble the pull-up bolt and lock washer.
5. Tighten the pull-up bolts alternately and evenly to the tightening levels shown in the torque table below. Do not use extensions on wrench handles. There should now be a gap between the face of the sprocket or other part hub and the flange of the QD bushing to ensure a satisfactory tapered grip and press fit. NOTE: This gap must not be closed.

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Q1. Are you a factory?
A. Yes. We are a factory with more than 15 years of manufacturing experience.

Q2. Is OEM and ODM service available?

A. Of course. We have many years of experience in OEM& ODM service.

Q3. I am buying from another supplier, but need better service. Would you match or beat the price I am paying?
A. We always feel we provide the best service and competitive prices. We would be happy to personalize a competitive quote for you; email us.

Additional information