Description
Reviews
| Brand | - |
| Category | New Fashion Jewelry / Chains |
| Origin | - |
| Material | PTFE Composite with Bronze Backing |
| Inner Diameter | 24 mm |
| Outer Diameter | 27 mm |
| Length | 30 mm |
| Lubrication Type | Self-Lubricating (Oil-Impregnated) |
| Max Load Capacity | 140 N/mm² Static |
| Operating Temperature | -40°C to +110°C |
| Friction Coefficient | 0.03 - 0.15 (Dynamic) |
| Application | Chain Guides, Pivot Points, Linkage Systems |
| Finish | Smooth PTFE Running Surface |
Anonymous
Mar 29, 2026
Rating: 5/5
Standard industrial grade quality
Exactly what was described. The PTFE layer is consistent, and the bronze backing provides good structural integrity. No issues during installation or operation so far.
Anonymous
Mar 22, 2026
Rating: 4/5
Good quality, slightly tight tolerance
The material quality seems excellent and very durable. The inner diameter was just a hair tight for our 24mm shaft, requiring some light reaming, but once installed, performance is great.
Anonymous
Mar 12, 2026
Rating: 5/5
Reliable and cost-effective
Bought a batch for maintenance stock. They meet all the specified dimensions perfectly. Great value for money compared to buying individual units from local suppliers.
Anonymous
Mar 07, 2026
Rating: 4/5
Works well in wet conditions
Using these in a washdown area where our chain drives operate. They handle the moisture well without rusting or seizing up. Would give 5 stars if shipping was faster.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect fit for our conveyor chain guide
These bearings slid right into the housing with minimal press fit required. We use them in a dusty environment for our chain drive system, and they have been running smoothly for three months without any additional lubrication.
Anonymous
Mar 01, 2026
Rating: 5/5
Excellent for high-cycle applications
We replaced standard bronze bushings with these SF1 composites in our packaging machine chains. The noise reduction is significant, and we no longer have to stop production for greasing.
Q: What is the recommended shaft tolerance for a 24mm ID?
A: For optimal performance, we recommend a shaft tolerance of e7 or f7 to ensure proper clearance for the self-lubricating layer to function correctly.
Q: Is the 30mm length exact or is there a tolerance?
A: There is a standard manufacturing tolerance of ±0.1mm on the length. If you require tighter tolerances, please contact us for custom machining options.
Q: Do I need to grease these before installation?
A: No, these are self-lubricating bearings. Adding external grease can actually attract dust and debris, potentially reducing their lifespan in dirty environments.
Q: Can these bearings be used in submerged water applications?
A: While they are water-resistant and suitable for wet environments, continuous submersion is not recommended as it may affect the long-term retention of the impregnated lubricant.
Q: Are these compatible with stainless steel shafts?
A: Yes, SF1 composite bearings work excellently with stainless steel shafts, providing low friction and preventing galling even under oscillating motion.
Natural Crystal Morganite Pink Loose Beads - Single Round Beads for DIY Jewelry Making and Craft Accessories
$0.89
Mini Pencil Sharpener for Elementary Students - Small Manual Crank Sharpener for Kids' Pencils
$1.89
Bamboo Flute Bar Dynamic Sheet Music Book for Accompaniment, Sight-Reading, and Rhythm Practice
$221.00
Multi-Function Thickened Industrial Scouring Pad for Cleaning, Stainless Steel Brushing, Rust Removal, and Emery Cleaning
$7.80
Natural Light Yellow Azeztulite Loose Beads for DIY Jewelry Making and Craft Supplies
$2.00
Expanded Clay Pebbles for Gardening - Pot Bottom Layer, Surface Mulch, Soil-Free Hydroponics for Flowers, Succulents, Orchids - Breathable Planting Medium
$7.70
1/5 Pack Silicone Kitchen Utensils Set for Cooking Baking
$43.12
Aizaofang 6-Cavity Triple Flower Silicone Mold - DIY Handmade Soap Home Decor - Food-Grade Heat-Resistant Material
$12.70
Single-Leg Manganese Steel Lifting Hook with Wide Opening for Hoists and Cranes
$92.00
Hesdick HZL-32 Portable Stone Removal Hook, Multi-Function Groove Tool for Car Tire Debris Cleaning
$9.28
PC Bonding Sealing Waterproof UV1901 Guardrail Tube Adhesive Shadowless Glue UV Glue Electronic Glue
$859.00
Wan Dian Wu Xian Stackable Toy Accessories - Vol.3 Prosperous Era Series Blind Capsule Figures for Desktop Display
$29.00
In Stock Commercial Vegetable Chopper and Meat Mincer - Grinding Machine for Baozi Fillings, Chili Dumplings, and Sausage WTP Meat Paste Processing
$5,805.00
Industrial Lint-Free Cloth for Cleaning Lenses, Optical Instruments, and Phone Screens; Microfiber Dusting Wipes
$81.58
Electric Barrel Water Dispenser Pump Automatic Water Lifter for Mineral and Purified Water
$74.00
F01RB0WA23 Transmission Valve for Roewe DQCT280 Remanufactured
$324.00
Full Payment Pre-order Guzi Bear DMMD Dramatical Murder Badge Polaroid Set Merchandise
$29.00
Peach Wood Sheepskin Rattle and Clapper Brass Traditional Handmade Baby Teething Hand Drum Newborn Gift Box
$29.90
Pirelli Run-Flat Tires 235/245/255/265/275/285 40 45 50 55R19R20R21
$350.00
Protective Case Lid for Pelican Cases - Laptop Insert for Models 1510, 1560, and 1535
$254.00
Universal 5800 Super Glue for Plastic, Metal, Glass, and Wood, 10-Second Fast Curing
$2.01
White Noise Wood Chip Core Grid Scented Candle Wooden Core S-Type Brand Name Candle Container Soy Candle Core Wood
$1.50
Zunjue 100% Cotton Paper Block 300g Watercolor Paper, Fine/Medium Grain, Thickened 80 Sheets, Neutral Acid-Free Journal Paper for Art Students, Beginners, Watercolor, Colored Pencil, Pen, Light Wash, Marker
$27.20
Outdoor Waterproof Dry Bag for Rafting and Creek Walking - Large Capacity Backpack for Swimming, Hiking, Diving, and Flood Rescue
$132.00
Lukang 995 Door and Window Fast-Drying Glass Sealant - Transparent Weather-Resistant Neutral Silicone Structural Adhesive
$222.90
Large Flip-Type Water Draining and Air Drying Machine, Fully Automatic Air Knife Blower for Vegetables, Commercial Continuous Drying Equipment
$15,282.00
Large Capacity Household Quilt Storage Bag - Waterproof and Moisture-Proof Duvet Organizer for Moving, Packing, and Luggage Sorting
$5.88
Scented Candle Aluminum Alloy Turntable 360-Degree Rotating Double-Sided Silent Non-Slip Small Turntable for Cake Decorating and DIY
$30.40
Ceramic Five Oxen Painting Brush Washer – Antique-Style Ink Well for Calligraphy & Traditional Painting
$16.90
Liupintang 3-in-1 Brush Washing Bucket with Palette - Portable Handheld Multi-Function Art Tool for Chinese Painting, Watercolor, and Gouache, Foldable Small Pail
$17.80
![[Intangible Cultural Heritage] Traditional Chinese Medicine Incense Bead Bracelet, Handmade DIY Bracelet, Medicinal & Floral Scent, Gift for Men and Women](https://www.gosteppe.com/cache/medium/product/199273/legacy-main-b764f878d1a98e50d598fd44.webp)
![YBNH0009 [Shibao] Sichuan Material Southern Red Agate Peace Buckle (Default: Shipped as Pre-strung Necklace Style)](https://www.gosteppe.com/cache/medium/product/97302/legacy-main-1bbdfe8d3838fc98d6e7f353.webp)
