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NTN Oil Free Bushings（Mounting Hole Fits：M7）
NTN offers products Oil Free Bushings specified by Mounting Hole Fits M7 from Automation Components product category. There are a total of 2 items. Search and select detailed specifications of parts for your machine with free CAD downloads. NTN products are available to order through MISUMI online 24 hours a day. Free shipping, no minimum order.
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2 items
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ARF Type Sleeve Bearing with Flange
NTN
ARF is a product with flange that is fabricated from rod or pipe material of Berry FL3000. Can also receive axial loads and is available with an internal diameter of 3 mm to 50 mm.
Type Inner Dia. d(Ø) Outer Dia. D(Ø) Overall Length L(mm) Metal Type Environment Resin Type Multi-layer Case Shape Mounting Shaft Fits Mounting Hole Fits Lubrication Thickness t(mm) Max. Allowable Surface Pressure P(N/mm2) Case Material Max. Allowable Velocity V(m/s) Length Type Max. Allowable PV Value Range(N/mm2•m/s) Max. Allowable PV Value(N/mm2•m/s) Flanged Type 4 ～ 50 7 ～ 60 6 ～ 60 - Standard / Heat Resistant / In Oil / In Water / In Seawater / In Chemical PTFE (Polytetrafluoroethylene) - - h6 M7 Unlubricated 1.5 ～ 5 - - - Single 0.3~1.0 1 From: ₹ 153.99 Days to Ship: Same day or more 
Same day or more
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NTN
ARE is a product that achieved zero emissions to the environment by applying auto mold processing to Berry FL3000. AR is a product fabricated from rod or pipe material of Berry FL3000.
Type Inner Dia. d(Ø) Outer Dia. D(Ø) Overall Length L(mm) Metal Type Environment Resin Type Multi-layer Case Shape Mounting Shaft Fits Mounting Hole Fits Lubrication Thickness t(mm) Max. Allowable Surface Pressure P(N/mm2) Case Material Max. Allowable Velocity V(m/s) Length Type Max. Allowable PV Value Range(N/mm2•m/s) Max. Allowable PV Value(N/mm2•m/s) Straight/sleeve 3 ～ 50 6 ～ 60 5 ～ 50 - Standard / Heat Resistant / In Oil / In Water / In Seawater / In Chemical PTFE (Polytetrafluoroethylene) - - h6 M7 Unlubricated - - - - Single 0.3~1.0 1 From: ₹ 114.00 Days to Ship: 5 Day(s) or more
5 Day(s) or more
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| Inner Dia. d(Ø) |
| Outer Dia. D(Ø) |
| Overall Length L(mm) |
| Metal Type |
| Environment |
| Resin Type |
| Multi-layer |
| Case Shape |
| Mounting Shaft Fits |
| Mounting Hole Fits |
| Lubrication |
| Thickness t(mm) |
| Max. Allowable Surface Pressure P(N/mm2) |
| Case Material |
| Max. Allowable Velocity V(m/s) |
| Length Type |
| Max. Allowable PV Value Range(N/mm2•m/s) |
| Max. Allowable PV Value(N/mm2•m/s) |
You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | |
| Brand | NTN | NTN |
| Product Series | ||
| From | ₹ 153.99- | ₹ 114.00- |
| Days to Ship | Same day or more | 5 Day(s) or more |
| Type | Flanged Type | Straight/sleeve |
| Inner Dia. d(Ø) | 4 ～ 50 | 3 ～ 50 |
| Outer Dia. D(Ø) | 7 ～ 60 | 6 ～ 60 |
| Overall Length L(mm) | 6 ～ 60 | 5 ～ 50 |
| Metal Type | - | - |
| Environment | Standard / Heat Resistant / In Oil / In Water / In Seawater / In Chemical | Standard / Heat Resistant / In Oil / In Water / In Seawater / In Chemical |
| Resin Type | PTFE (Polytetrafluoroethylene) | PTFE (Polytetrafluoroethylene) |
| Multi-layer | - | - |
| Case Shape | - | - |
| Mounting Shaft Fits | h6 | h6 |
| Mounting Hole Fits | M7 | M7 |
| Lubrication | Unlubricated | Unlubricated |
| Thickness t(mm) | 1.5 ～ 5 | - |
| Max. Allowable Surface Pressure P(N/mm2) | - | - |
| Case Material | - | - |
| Max. Allowable Velocity V(m/s) | - | - |
| Length Type | Single | Single |
| Max. Allowable PV Value Range(N/mm2•m/s) | 0.3~1.0 | 0.3~1.0 |
| Max. Allowable PV Value(N/mm2•m/s) | 1 | 1 |
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Configure
Specification/Dimensions
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Inner Dia. d(Ø)
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Outer Dia. D(Ø)
- 3
- 3.5
- 4
- 4.5
- 4.6
- 5
- 05
- 5.5
- 5.6
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- 6
- 7
- 08
- 8
- 9
- 10
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- 12
- 12$8$12$8
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- 27
- 28
- 29
- 30
- 31
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- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 42
- 43.0
- 44
- 45
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- 48
- 50
- 52
- 53.0
- 55
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- 65
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- 135
- 140
- 145
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- 155
- 156
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- 165
- 170
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- 190
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Overall Length L(mm)
- 2
- 02
- 2.4
- 2.5
- 2.6
- 2.7
- 2.8
- 3
- 03
- 3.5
- 3.8
- 4
- 04
- 4.4
- 4.5
- 4.8
- 05
- 5
- 5.5
- 5.9
- 06
- 6
- 6.5
- 7
- 7.5
- 7.7
- 08
- 8
- 9
- 9.5
- 10
- 10.5
- 11
- 11.5
- 12
- 12.5
- 13
- 13.5
- 13.8
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- 15
- 15.5
- 16
- 16.5
- 17
- 17.5
- 18
- 19
- 20
- 21
- 21.5
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31.5
- 32
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- 42
- 42.5
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- 48
- 50
- 51
- 52
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- 63
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- 67
- 67.5
- 68
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- 86
- 90
- 95
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- 128
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- 141
- 150
- 158
- 170
- 188
- 500
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Metal Type
- Bronze
- Brass
- Cast Iron
- Sintered Steel
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Environment
- Standard
- Heat Resistant
- Foreign Object Resistant
- Vibration Resistant
- In Oil
- In Water
- In Seawater
- In Chemical
- Conformance to Food Sanitation Law
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Resin Type
- POM (Polyacetal)
- PTFE (Polytetrafluoroethylene)
- High Performance Polymer Composition
- Polyphenylenesulfide
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Multi-layer
- Steel, Sintered Bronze, Polytetrafluoroethylene
- Steel, Sintered Bronze, Polyacetal
- Steel, Copper Type Sintered Alloy
- Metal Mesh, Polytetrafluoroethylene
- Aluminum, Fluororesin
- Polyacetal
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Case Shape
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Mounting Shaft Fits
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Mounting Hole Fits
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Lubrication
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Thickness t(mm)
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Max. Allowable Surface Pressure P(N/mm2)
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Case Material
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Max. Allowable Velocity V(m/s)
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Length Type
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Max. Allowable PV Value Range(N/mm2•m/s)
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Max. Allowable PV Value(N/mm2•m/s)
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Related Categories to Oil Free Bushings
FAQ Oil Free Bushings
- Question: What does the term ″self-lubricating bushing″ or oil free bushings refer to?
- Answer: The term ″self-lubricating bushing″ or oil free bushings refers to a type of bearing or sleeve that has the ability to provide lubrication to reduce friction without requiring external lubricants like oil or grease. These bushings are designed with embedded solid lubricants, such as graphite or PTFE (Teflon), which release lubrication during operation. They are commonly used in various applications where low friction, smooth operation, and maintenance-free performance are desired, such as in machinery, automotive components, and industrial equipment.
- Question: Should you apply grease or oil to bronze bushings?
- Answer: In general, bronze bushings do not need additional grease or oil. They are self-lubricating or oil free bushings and don't require external lubrication. However, if there is excessive friction or wear, a small amount of compatible oil or grease can be applied. It's best to follow the manufacturer's recommendations or seek professional advice for specific bronze bushings.
- Question: What materials are typically used to manufacture oil free bushings?
- Answer: Oil free bushings are usually made from materials like bronze, brass, steel, PTFE (Teflon), nylon, and composites. These materials have built-in lubrication properties, reducing the need for external lubricants. Bronze and brass are durable choices, steel is strong, PTFE offers low friction, nylon is lightweight, and composites provide a balance of strength and self-lubrication. Material selection depends on specific application requirements.
- Question: Are bronze bushing self-lubricating?
- Answer: Yes, bronze bushings are self-lubricating. They contain built-in solid lubricants like graphite or PTFE. This means they can provide lubrication on their own, reducing friction and wear. They don't require additional external lubrication, making them convenient and suitable for various applications.
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