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Home / Seedling Stakes & Supports / SF1 Composite Bearing/Oil-Free Liner/Copper Sleeve/Shaft Sleeve/Self-Lubricating Oil-Impregnated Bearing Inner Diameter 15 16 17 18

Attributes

Brand -
Category Gardening Supplies, Garden Decor & Plant Care / Seedling Stakes & Supports
Origin -
Material Composition SF1 Composite (PTFE/Fiber/Copper)
Lubrication Type Self-Lubricating / Oil-Free
Available Inner Diameters 15mm, 16mm, 17mm, 18mm
Base Layer Low Carbon Steel with Copper Plating
Operating Temperature -40°C to +110°C
Max Load Capacity 25 N/mm² Static
Friction Coefficient 0.03 - 0.15 (Dynamic)
Surface Treatment Tin Plated Outer Surface
Application Suitability High Speed, Low Load Mechanisms
Package Contents 1 x SF1 Composite Bearing Sleeve

6 reviews

A

Anonymous

Mar 31, 2026

Rating: 5/5

Durable and reliable

Using these for a custom seedling sorting machine. They handle the repetitive motion perfectly. The copper layer provides excellent heat dissipation. Highly recommend for DIY agricultural projects.

A

Anonymous

Mar 30, 2026

Rating: 5/5

No more squeaking

Replaced the old plastic bushings in my greenhouse window openers with these SF1 bearings. The difference is night and day. Completely silent and moves freely without any grease.

A

Anonymous

Mar 25, 2026

Rating: 4/5

Good quality, precise sizing

Ordered the 15mm variant. The inner diameter was spot on for my shaft. It took a little force to press fit, which indicates good tolerance. Works well for my automated irrigation arm supports.

A

Anonymous

Mar 05, 2026

Rating: 5/5

Exactly what I needed

Fast shipping and the product matches the description perfectly. The oil-impregnated liner ensures long life without maintenance. Using them to upgrade my garden tool hinges.

A

Anonymous

Mar 04, 2026

Rating: 4/5

Solid industrial component

Great bearing for the price. I used the 18mm size. It's thin-walled but very strong. Just make sure your housing is smooth to prevent wear on the outer copper layer during installation.

A

Anonymous

Mar 02, 2026

Rating: 5/5

Perfect fit for my garden trellis joints

I used the 16mm size to reinforce the pivot points on my heavy-duty tomato stakes. The self-lubricating feature is great because I don't have to worry about oil dripping onto my plants. Smooth operation even after weeks of wind exposure.

5 FAQ

Q: Do I need to add grease or oil before installing?

A: No, these are self-lubricating bearings. The PTFE liner provides sufficient lubrication for operation. Adding external grease is not necessary and may attract dirt.

Q: Are these suitable for high-speed rotation?

A: SF1 bearings are designed for high-speed, low-load applications. They perform excellently in mechanisms with rapid oscillating or rotating movements.

Q: Can these bearings be used outdoors in rainy conditions?

A: Yes, the SF1 composite material is resistant to corrosion and moisture, making it suitable for outdoor gardening applications like stake supports.

Q: What is the wall thickness for the 17mm inner diameter version?

A: The standard wall thickness for our SF1 series is typically 1.0mm to 1.5mm depending on the specific manufacturing batch. Please measure your housing bore to ensure a proper press fit.

Q: Can I cut these sleeves to a custom length?

A: Yes, you can cut the sleeve to your required length using a fine-tooth hacksaw or a pipe cutter. Ensure the edges are deburred smoothly after cutting to prevent shaft damage.

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