Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | High-Strength Copper Alloy with Embedded Graphite |
| Product Type | Round Flanged Bushing |
| Lubrication | Self-Lubricating (Oil-Free) |
| Available Sizes | MPTZ30, MPTZ35, MPTZ40, MPTZ50 |
| Inner Diameter Tolerance | H7 Standard |
| Hardness | HB 90 - 120 |
| Max Dynamic Load | 25 N/mm² |
| Operating Temperature | -10°C to +160°C |
| Friction Coefficient | 0.08 - 0.12 (Running) |
| Surface Treatment | Polished Inner Bore |
Anonymous
Mar 03, 2026
Rating: 4/5
Solid performance
Works well in dry conditions. Make sure to follow the press-fit instructions carefully during installation to avoid deformation.
Anonymous
Feb 23, 2026
Rating: 5/5
Excellent for automated machinery
We replaced our standard oil-lubricated bushings with these graphite embedded ones. The reduction in maintenance is significant. No oil leaks anymore.
Anonymous
Feb 17, 2026
Rating: 5/5
Reliable industrial component
Ordered a batch for our production line. Consistency across all units is great. Will order again for the next quarter.
Anonymous
Feb 07, 2026
Rating: 5/5
Solved our friction issue
Running these in a high-load application. The graphite plugs are evenly distributed. Very satisfied with the wear resistance so far.
Anonymous
Feb 05, 2026
Rating: 4/5
Good quality, precise fit
The MPTZ40 model fit our shaft perfectly. Hardness is as described. Took off one star because shipping packaging was slightly damaged, but the product was fine.
Q: What is the recommended shaft tolerance for the MPTZ50 size?
A: We recommend a shaft tolerance of e7 or f7 for optimal running clearance with the H7 bore.
Q: Can these be used in outdoor environments with rain exposure?
A: Yes, the copper alloy offers good corrosion resistance, but we recommend checking specific chemical compatibility for harsh environments.
Q: Do these bushings require any initial grease or oil before installation?
A: No, these are designed to be oil-free. The embedded graphite provides lubrication during operation.
Q: What is the maximum rotational speed these can handle?
A: For continuous operation, we recommend speeds below 0.5 m/s to ensure optimal wear life of the graphite plugs.
Q: Is the flange thickness standard across all sizes?
A: The flange thickness varies slightly depending on the inner diameter model to ensure structural integrity. Please refer to the technical drawing.
Meiyike Water-Soluble Fertilizer with Major Elements – Hua Duo Duo No.1, No.2, No.10 Formulas, High Nitrogen, Phosphorus, Potassium Specialized Compound Fertilizer
$49.34
Waterproof Swim Bag, Wet Clothes Storage Tote with Handle, Large-Capacity Outdoor Hot Spring Pouch Dedicated for Mobile Phones
$59.96
Magic Expandable Bag, Foldable Shopping Tote, Portable Large-Capacity Storage for Grocery, Travel, and Mall Trips
$6.80
Dancolin Blending Stump Set for Oil Pastels, Art Student Tools for Heavy-Color Oil Painting, Dual-Tip Pointed and Round DIY Soft Wax Drawing, Smudging, Mixing, Highlighting, Erasable Knife for Painting and Color Blending
$16.80
Shanlian Hubei Brush Small Perfect Brush Washer - Ceramic Ink Dish, Calligraphy Cleaning Tool, Moisturizing Water Pot, Art Supply Decor
$14.20
Yanyu Mineral Water Fish Tank Stand - Triangular Bracket for Inverted Bottle Self-Made Water Circulation System
$17.05
Jingdezhen Pink Peony Flourishing Tea Canister Ceramic Lidded Loose Tea Storage Jar CYG-4578 One Jin Capacity Pu'er
$450.60
Round Sponge Brush Stamp with Mushroom Head – Printing Tool for Kindergarten Art and Kids' Crafts
$0.27
Metal Wick Centering Tool with Wooden Base for DIY Scented Candle Making
$1.28
Custom Temporary Bank Account Opening Sign, Company Signboard, Stainless Steel Door Plate, PVC Simple Plaque, Acrylic Advertising Board
$15.20
Natural Raw Crystal Diffuser Stones 500g - Same Style as Certain Summer Brand, Flameless Indoor Decor (White, Green, Purple, Yellow, Black, Blue)
$10.20
Iron Chain, Flower Pot Hanging Chain with Iron Rings, Black Suspension Chain for Bird Cages and Garden Planters
$0.10
Sheepskin Rattle with Brass Bells - Handmade Wooden Peach Wood Baby Toy for Chewing, Perfect for Children's Day
$10.80
Commercial Square Insulated Warmer Cabinet with Constant Temperature Heating, Countertop Display Case for Roast Duck, Chicken, Fried Chicken, Smoked Goose, and BBQ Meat
$338.00
PISEN Desktop Cable Organizer - Magnetic Data Cord Manager, Soft Silicone Fixed Wire Winder with Adhesive Clips, Mini Portable Hub
$10.10
Handcrafted Peach Wood and Sheepskin Rattle with Brass Jingle Stick – Traditional Chewable Wooden Baby Toy
$74.00
DC Drive DCS550-S02-0050-05-00-00
$10,838.20
Waterproof Storage Bag for Clothes and Bathroom Use, Large-Capacity Drawstring Organizer for Men and Women, Outdoor Travel and Toiletry Pack
$39.90
Steel Speed Bump with Rubber Surface for Cars and Railways
$3,668.00
Huaboshi Thickened Resin Vegetable Planter Box – Rectangular Plastic Balcony Grow Container with Drainage Tray
$45.99
New Data Cable Storage Bag Travel Digital Charger Cord Organizer Protective Visible Multi-Use Portable Case
$1.64
Press Wash Blade for KBA Printing Presses - Model KBA105 Ink Scraper, 1160*40mm
$40.50
Genuine Pirelli Run-Flat Car Tire P7 225 245 275 285/35 40 45 R18 19 20 21
$336.00
Chuangshidai 100XP Compact Desktop Fume Extractor for Soldering Irons - Rapid Smoke Purification
$696.00
Multi-Function Kitchen Sink Rack - Dish Drying Organizer for Bowls and Plates
$33.10
Water Brush Kids Water Painting Book Graffiti Special Pen Water Sketchbook Eco-Friendly Safe Tap Water Refillable Pen Set
$2.16
No-Drill Over-Toilet Storage Rack for Bathroom Restroom Organizer
$8.90
Jingdezhen Blue and White Porcelain Antique Brush Washer, Traditional Chinese Painting Calligraphy Brush Rinse Basin, Large and Small Water Pots
$16.90
Sketch Blending Stump Set for Art Students - Highlight Detail Shadow Tool Kit with Replacement Sponge Heads for Beginners
$9.00
Changyiyou Outdoor Large-Capacity Wheeled Duffel Bag - Thickened Storage Backpack with Wheels for Camping Gear and Travel
$109.00
![[M2-M20] Stainless Steel Spring Washer](https://www.gosteppe.com/cache/medium/product/16306/legacy-main-ef3d2dba3bde669d48e6cca2.webp)
