Description
JDB / MPBZ Straight Graphite Bronze Bushings
A collection of JDB straight oilless graphite bronze bushings in various sizes
The JDB (MPBZ) series represents the industry standard for reliable, maintenance-free performance in a simple and effective design. These straight cylindrical sleeve bearings are constructed from a robust cast bronze base, which is embedded with solid graphite lubricant plugs. This creates a true self-lubricating bearing that requires no external oil or grease for its entire service life.
Designed for press-fit installation, JDB bushings provide a cost-effective and high-performance solution for a vast range of industrial applications, particularly those involving high loads, low speeds, and temperature extremes where traditional lubrication is impractical.
Key Features & Advantages
- 100% Self-Lubricating: Solid graphite provides continuous, clean lubrication, eliminating maintenance and preventing contamination.
- High Load Capacity: The solid cast bronze construction offers excellent strength and can withstand heavy radial loads.
- Superior Wear Resistance: Ideal for oscillating, intermittent, or slow-speed motion where a hydrodynamic film is difficult to form.
- Wide Temperature Range: Performs reliably in temperatures from -40°C to 300°C (-40°F to 572°F) where liquid lubricants fail.
- Simple & Economical: The straightforward sleeve design is easy to install and provides a highly cost-effective bearing solution.
Technical Specifications & Tolerances
Our JDB bushings are manufactured to precise tolerances for optimal press-fit performance.
| Diameter Range (mm) | 4~6 | 8~10 | 12~18 | 19~30 | 32~50 | 55~80 | 85~120 | 125~180 | 190~200 |
|---|---|---|---|---|---|---|---|---|---|
| Inner Diameter (d) Tolerance | +0.022 +0.010 | +0.028 +0.013 | +0.034 +0.016 | +0.041 +0.020 | +0.050 +0.025 | +0.060 +0.030 | +0.071 +0.036 | +0.083 +0.043 | +0.096 +0.050 |
| Outer Diameter (D) Tolerance | +0.015 +0.006 | +0.018 +0.007 | +0.021 +0.008 | +0.025 +0.009 | +0.030 +0.011 | +0.035 +0.013 | +0.040 +0.015 | +0.046 +0.017 | – |
Available Standard Sizes (Inner Diameter vs. Outer Diameter)
Please Note: The sizes listed below are available in a wide variety of lengths. Please contact our sales team for specific length availability and to request a quote.
| Inner Ø (d) | Available Outer Ø (D) | Inner Ø (d) | Available Outer Ø (D) |
|---|---|---|---|
| 4 | 6 | 8 | 55 | 65 | 70 | 75 |
| 5 | 7 | 8 | 9 | 10 | 60 | 70 | 74 | 75 | 80 |
| 6 | 8 | 10 | 12 | 63 | 75 |
| 8 | 10 | 11 | 12 | 15 | 65 | 75 | 80 | 85 |
| 10 | 12 | 14 | 15 | 16 | 70 | 80 | 85 | 90 |
| 12 | 14 | 15 | 16 | 18 | 21 | 22 | 75 | 85 | 90 | 95 |
| 16 | 20 | 22 | 24 | 25 | 26 | 28 | 80 | 90 | 95 | 96 | 100 |
| 17 | 22 | 23 | 85 | 95 | 100 | 105 |
| 18 | 22 | 24 | 25 | 90 | 100 | 105 | 110 |
| 20 | 24 | 25 | 26 | 28 | 30 | 100 | 110 | 115 | 120 |
| 22 | 22 | 25 | 30 | 32 | 110 | 120 | 125 | 130 |
| 25 | 29 | 30 | 32 | 33 | 35 | 120 | 130 | 135 | 140 |
| 30 | 34 | 35 | 40 | 42 | 130 | 140 | 150 |
Ready to Eliminate Maintenance?
Contact us with your required dimensions (Inner Ø, Outer Ø, and Length) for a competitive quote.
