Description
Reviews
| Brand | - |
| Category | Electronic Components Market / Other Components |
| Origin | - |
| Material | High-Grade Carbon Steel |
| Model Number | BMB3*40*30 |
| Wall Type | Thin-Wall Design |
| Application | Mechanical Excavator Shafts |
| Inner Diameter | 30 mm |
| Outer Diameter | 40 mm |
| Length | Customizable Sizes Available |
| Surface Finish | Precision Machined |
| Hardness | HRC 45-50 |
| Compatibility | Universal Fit for Various Liners |
Anonymous
Mar 31, 2026
Rating: 4/5
Solid industrial grade
Very durable steel. The surface finish is smooth which reduces friction effectively. Delivery took a day longer than estimated, but the product quality makes up for it.
Anonymous
Mar 28, 2026
Rating: 5/5
Best replacement part
Replaced worn-out copper sleeves with these steel ones. The performance improvement in our excavators is noticeable. Highly recommend for heavy machinery maintenance.
Anonymous
Mar 25, 2026
Rating: 5/5
Excellent precision
As a procurement manager, I appreciate the consistency in sizing. These sleeves fit perfectly into our liner shaft assemblies. Will definitely reorder.
Anonymous
Mar 22, 2026
Rating: 4/5
Good quality, fast shipping
The thin-wall design works well for our specific application. Shipping was faster than expected. Only giving 4 stars because the packaging could be slightly more robust for heavy industrial parts.
Anonymous
Mar 17, 2026
Rating: 5/5
Perfect fit for our excavator repair
Ordered these sleeves for a fleet maintenance job. The dimensions were exact, and the steel quality is top-notch. Installation was smooth without any need for additional machining.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable component
We have used multiple sizes from this supplier. The BMB3*40*30 model holds up well under high stress. Great value for the price compared to OEM parts.
Q: Is the material resistant to corrosion in outdoor environments?
A: The carbon steel has a protective finish, but for harsh outdoor or marine environments, we recommend applying an additional anti-corrosion coating during installation.
Q: Do you offer a warranty on these components?
A: Yes, all our mechanical sleeves come with a 12-month warranty against manufacturing defects under normal operating conditions.
Q: Are these sleeves compatible with older excavator models?
A: Yes, the BMB3*40*30 size is designed to be universal, but we recommend checking your specific shaft dimensions against our size chart before ordering.
Q: Can these be welded directly onto the shaft?
A: These are press-fit sleeves designed for mechanical assembly. While they are made of weldable steel, we advise consulting your engineering team for specific welding procedures to avoid warping.
Q: What is the lead time for bulk orders of 500 units?
A: For bulk orders over 100 units, our standard lead time is 7-10 business days. Custom sizes may require an additional 3-5 days.
CANDLE.LAB | Realistic Cookie Series DIY Aromatherapy Plaster Candle Diffuser Handmade Silicone Mold
$12.00
Zhao Mengfu Calligraphy Copybook - Running Script 'Qingyun Zhi', Red-Traced Practice Paper for Beginners in Calligraphy
$15.80
Aesthetic Street Scene Watercolor Line Art for Coloring, 16K Landscape Watercolor Coloring Book, Painting Book, Cotton Pulp Watercolor Album
$15.80
Warehouse Nitrogen Sealing Generator - High-Purity Food-Grade PSA Skid-Mounted Container Equipment
$959.00
Ransheng UV Resin Gel, UV Crystal Glue for Gemstones, Ear Cuff Sealing, Dried Flower Molds, DIY Quick-Dry UV Epoxy
$44.00
Dairy Processing Production Line, Pasteurized Milk Equipment, Low-Temperature Sterilization and Fermentation Machine for Cow and Camel Milk
$8,203.00
Blue Lint-Free Wiping Paper - Industrial Large Roll Oil-Absorbent Shop Towels
$62.00
Green-Red AB Glue 5-Minute Fast-Drying Acrylate AB Glue for Glass Ceramic Metal Structural Adhesive Quick Set
$18.13
![Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes](https://www.gosteppe.com/cache/small/product/270189/legacy-main-0c626807b3c375d4d5d6a89b.webp)
Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes
$40.30
Ru Kiln Celadon Ceramic Brush Washer Set - Large, Medium, and Small Ink Dishes for Chinese Calligraphy and Painting Supplies
$88.80
Multi-Layer Over-Toilet Storage Rack for Bathroom, Laundry Room, and Balcony - Floor Standing Organizer
$44.96
Wrought Iron Solid Stainless Steel Letters – Minimalist Space Signage, Custom Metal Advertising Letters for Storefronts & Feature Walls
$10.00
Shimoyama 304 Stainless Steel Telescopic Rod - Kitchen Sink Cutting Board Support Rack for Dish Drying and Cloth Hanging
$74.80
Modified Wheel Lug Nuts Forged Steel High Strength for Lafesta Regal CT4 Civic Accord Crown Mazda3
$209.00
Milk Separator Machine - Electric Cream Skimmer and Butter Churn for Home and Commercial Use (Cow and Goat Milk)
$946.00
Three-Phase Auto-Reclosing Leakage Circuit Breaker - Smart Phase Loss, Undervoltage, Overload Protection with 485 Communication for PV Grid Connection
$693.20
Multi-Function Vegetable Cutter Commercial Electric for Cafeterias Fully Automatic Chili Scallion Chopper Imitation Hand-Cut Leek Machine
$1,600.00
Zhengtong ZT30 Fog Cannon - Micron-Level Humidification & Cooling Spray System for Steel Mills
$6,000.00
100Pcs Custom Clothing Hang Tags Personalized Plastic Securi
$125.94
Wall-Mounted Bathroom Storage Shelf, No-Drill Organizer for Sink, Shower, and Toilet Area
$5.76
Thickened 5mm Wool Felt Mat for Calligraphy Practice - Premium Writing Pad for Students and Beginners, Part of Four Treasures of the Study Set
$2.80
Multi-Function Car Tire Stone Removal Tool with Hook for Picking Out Rocks
$4.06
Label Stripping Machine – Semi-Automatic Unit for Beer, Baijiu, and Glass Bottle Label Removal; Custom Manufacturing Available
$19,980.00
High-Strength Manganese Steel Lifting Chain 6*18mm G80 Wear-Resistant Towing Chain
$84.34
Touchmark Acrylic Markers for Elementary Art, Washable Watercolor Pens for Kids' Drawing and Painting
$10.80
Official Flagship Store Steel Tongue Drum, C Key, 6-inch, 11 Notes, Carbon Steel Performance Grade Instrument for Kids and Students
$41.10
Outdoor Waterproof Backpack Camouflage Dry Bag with Wet/Dry Separation for Swimming, Rafting, and Trekking
$8.42
![[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors](https://www.gosteppe.com/cache/small/product/270170/legacy-main-59be8c850af1ec303ad4901b.webp)
[Save $50 on Order] Bundle: 5 Notebooks + 2 Pens + 20 Refills + 2 Grip Correctors
$39.90
Sketching Tool Set for Art Students - Includes Blending Stumps, Tortillons, Paper Stumps, Sponge Balls, Cotton Swabs, Highlight Pens, Gray Tone Tools, Insert Knives, Smudging Knives, Scrapers, and Blending Cotton
$7.65
Suede Rope Korean Velvet Rope DIY Aromatherapy Candle Plaster Tag Hanging Cord Packaging Gift Box Ribbon Decorative Leather Rope
$0.85
![[Free Shipping for Ten Pieces] Original Microwave Magnetron Socket Pin Filament Socket Magnetron Pins](https://www.gosteppe.com/cache/medium/product/139870/legacy-main-8f56b7f2a19b6ccbf3412204.png)
