Project Description
Bearing Design – Shapes and Geometries
Oil-Free Bushing, Straight
Low maintenance frequency.
Produce non-standard sizes to suit specific customer requirements.
Available in metric and imperial sizes from stock
Oil-free bushing have been developed for high load, low speed applications and are made of rotational cast high-strength bronze using a specially formed graphite plug as lubricant.

Oil-free Bearing – Oilless Self-lubricating Tech
Oil-free plain bearing. It can replace rolling bearings and copper alloy bearings in high-pressure, high-temperature, and high-accuracy applications. Structure: High strength casting bronze embedded with solid lubricants.Features: Cost-effective; Adaptable; Wear-resistant; Obvious advantages when used under high-load and oil-free conditions; Solve special needs in environments that generally cannot be met by copper bushings.
Factory highlights: Produce with high-end equipment; Use digital application technology; High product accuracy; Small geometric tolerance; International-level solid lubrication performance.

Application For Graphite Plugged Bronze Bushing
Used on consecutive casting and rolling machines,mine-exploiting equipment, ships, steam engine, injection molders, and auto molds,anti-abrasion and anti-erosion parts, light industrial machines, tools, moving belt in the drying machine, the door of the fireplace, for instance, on no oil parts on the building, metallurgy and transportation machines, machine tools, agricultural machinery, crane electromotor, spring pin, steering shaft, and transmission, etc
Why Use Oil-free Bushings?
Graphite plugged bushings are beneficial anytime an application needs ongoing lubrication but also needs to perform for long periods without maintenance. These bearings are self-lubricating, so additional oil and grease are not needed.
Because graphite plugged bearings self-lubricate, money is saved on maintenance and replacement—both in materials and labor costs. Additionally, less downtime is needed to add more lubricant or perform other everyday maintenance tasks. Graphite plugged bushings have better wear resistance than other types of bearings. This is because when graphite plugged bushings are in use, there are very minimal friction thanks to the lubricant film they produce. Friction is what wears parts down and causes them to need eventual replacement, so limiting this is the key to durability.

Articles from the workshop
Oil-free Bushings – Request a free quote
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
High hardness, wear-resistance, and fully comply with EU ROHS standards. Can provide spectrometer composition test, strength test.
Oil-free Bushing Size Chart
Code | d F7 | D m6 | L | |||||||||||||||||||||
Oil-free Bearing | 5 | 0.022 0.010 | 9 | 0.015 0.006 | 8 | 10 | 12 | 15 | ||||||||||||||||
6 | 10 | 8 | 10 | 12 | 15 | 16 | 20 | |||||||||||||||||
8 | 0.028 0.013 | 12 | 0.018 0.007 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | ||||||||||||||
10 | 14 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | |||||||||||||||
12 | 0.034 0.016 | 18 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | |||||||||||||
13 | 19 | 0.021 0.008 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | ||||||||||||||
14 | 20 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | |||||||||||||||
15 | 21 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | ||||||||||||||
16 | 22 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | ||||||||||||||
17 | 23 | 15 | 30 | 35 | ||||||||||||||||||||
18 | 24 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | ||||||||||||||
19 | 0.041 0.020 | 26 | 15 | 20 | ||||||||||||||||||||
20 | 28 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | |||||||||||
30 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 100 | ||||||||||||||
22 | 32 | 0.025 0.009 | 12 | 15 | 20 | 25 | ||||||||||||||||||
25 | 33 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | |||||||||||||
35 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | ||||||||||||
28 | 38 | 20 | 25 | 30 | 40 | |||||||||||||||||||
30 | 38 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||
40 | 12 | 15 | 16 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | ||||||||||||||
31.5 | 0.05 0.025 | 40 | 30 | 40 | ||||||||||||||||||||
32 | 42 | 20 | 30 | 40 | ||||||||||||||||||||
35 | 44 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | |||||||||||||||
45 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | ||||||||||||||||
38 | 48 | 30 | 40 | |||||||||||||||||||||
40 | 50 | 15 | 20 | 25 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||
55 | 0.03 0.011 | 15 | 25 | 30 | 35 | 40 | 50 | 60 | ||||||||||||||||
45 | 55 | 30 | 35 | 40 | 50 | 60 | ||||||||||||||||||
56 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||||
60 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||||
50 | 60 | 20 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||
62 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | |||||||||||||||||
65 | 30 | 40 | 50 | 60 | 70 | 80 | 100 | |||||||||||||||||
55 | 0.06 0.03 | 70 | 40 | 50 | 60 | 70 | ||||||||||||||||||
60 | 74 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | 100 | |||||||||||||||
75 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | 100 | ||||||||||||||||
63 | 75 | 60 | 70 | 80 | ||||||||||||||||||||
65 | 80 | 40 | 50 | 60 | 70 | 80 | ||||||||||||||||||
70 | 85 | 0.035 0.013 | 30 | 35 | 40 | 50 | 60 | 70 | 80 | 100 | ||||||||||||||
90 | 50 | 60 | 70 | 80 | 100 | |||||||||||||||||||
75 | 90 | 50 | 60 | 70 | 80 | 100 | ||||||||||||||||||
95 | 60 | 70 | 80 | 100 | ||||||||||||||||||||
80 | 96 | 40 | 50 | 60 | 70 | 80 | 100 | 120 | ||||||||||||||||
100 | 40 | 50 | 60 | 70 | 80 | 100 | 120 | 140 | ||||||||||||||||
85 | 0.071 0.036 | 100 | 60 | 80 | ||||||||||||||||||||
90 | 110 | 30 | 50 | 60 | 70 | 80 | 90 | 100 | 120 | |||||||||||||||
100 | 120 | 50 | 60 | 70 | 80 | 100 | 120 | 140 | ||||||||||||||||
110 | 130 | 0.04 0.015 | 50 | 70 | 80 | 100 | 120 | |||||||||||||||||
120 | 140 | 70 | 80 | 90 | 100 | 120 | 140 | |||||||||||||||||
125 | 0.083 0.043 | 145 | 100 | 120 | ||||||||||||||||||||
130 | 150 | 80 | 100 | 130 | ||||||||||||||||||||
140 | 160 | 100 | 140 | |||||||||||||||||||||
150 | 170 | 80 | 100 | 150 | ||||||||||||||||||||
160 | 180 | 80 | 100 | 150 |