Description
Reviews
| Brand | - |
| Category | Model / Hobby Parts / Model Making Tools & Supplies |
| Origin | - |
| Material | HRB-78 High-Strength Copper Alloy |
| Hardness | HB 180-220 |
| Surface Finish | Precision Machined (Ra 0.8) |
| Application | Wear-resistant shaft sleeves and bushings |
| Customization | Available (OD, ID, Length) |
| Tolerance | ISO H7/g6 Standard |
| Origin | Direct Manufacturer Sale |
| Lead Time | 3-5 Days for Stock, 10 Days for Custom |
| Package | Anti-corrosion Oil + Protective Foam Box |
| Certification | ISO 9001:2015 Compliant |
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect fit for our prototype machinery
Ordered custom sizes for a model making project. The tolerance was spot on, and the HRB-78 material feels incredibly durable. Highly recommend for precision work.
Anonymous
Mar 25, 2026
Rating: 5/5
Support team helped with specs
I wasn't sure about the exact dimensions needed. The support team guided me to the right HRB-78 spec. The final product works flawlessly in my assembly.
Anonymous
Mar 16, 2026
Rating: 4/5
Great quality, slightly long shipping
The copper bushings are excellent quality and machined very smoothly. Only giving 4 stars because the custom order took a day longer than expected, but worth the wait.
Anonymous
Mar 13, 2026
Rating: 5/5
Excellent wear resistance
We use these in high-friction areas of our scale models. After weeks of testing, there is virtually no wear. The surface finish reduces friction significantly.
Anonymous
Mar 08, 2026
Rating: 4/5
Good value for bulk orders
Bought a batch for multiple projects. Consistency across all units was impressive. One unit had a minor burr that was easily filed down, otherwise perfect.
Anonymous
Mar 05, 2026
Rating: 5/5
Professional grade components
As a hobbyist moving into professional prototyping, these parts meet all my needs. The packaging prevented any oxidation during transit. Will buy again.
Q: Can you machine these bushings to non-standard inner diameters?
A: Yes, we offer full custom machining services. Please provide your specific ID, OD, and length requirements, and we can produce them within 10 days.
Q: What is the minimum order quantity for custom sizes?
A: There is no strict minimum order quantity for custom sizes; however, setup fees may apply for very small batches (under 10 units).
Q: Do you provide technical drawings before production?
A: Absolutely. For custom orders, we will generate and send a PDF technical drawing for your approval before starting the machining process.
Q: What is the maximum operating temperature for HRB-78 copper?
A: HRB-78 alloy typically maintains its mechanical properties up to 200°C (392°F). For higher temperatures, please contact us for alternative material recommendations.
Q: Is this material suitable for underwater applications?
A: Yes, copper alloys like HRB-78 have good corrosion resistance in water. We recommend applying a light protective coat if used in saltwater environments for extended periods.
Foldable Steel Tire Stone Removal Hook - Multi-Tool for Tire Repair, Stone Picking, and Emergency Window Breaking with Storage Bag
$11.70
Integrated Catalytic Combustion Unit RCO Furnace - Exhaust Gas Treatment System with Activated Carbon Adsorption-Desorption and Catalytic Combustion
$231,249.00
Universal Waterproof and Sunproof Cover for E-Bike Charger with Outdoor Storage Box
$11.85
Baohong Paper Brick Watercolor Paper Pad, Medium/Coarse Texture, Square/Round Shapes for Painting, Sketching, and Cotton Pulp Practice
$28.00
Commercial Food Warmer Cabinet for Pies, Youtiao, Burgers, Egg Tarts, and Fried Chicken, Heating and Temperature-Controlled Display Case
$977.00
Masking Tape Spray Paint Shielding Paper for Art Students and Sketching - Non-bleeding, Residue-free, Hand-tearable, Shoe-safe
$1.00
Electric Scooter and Motorcycle Hook - Multi-Functional Storage Hanger for Delivery Bikes and Cargo Boxes
$2.50
Huirui 420AB Fast-Drying Glue for Silicone - Bonds ABS, Stainless Steel, TPE, Rubber; High-Strength Instant Adhesive for Difficult Materials
$36.00
Color Proofing Instrument Ink Mixing Tool Sample Making Machine
$1,860.00
Variable Frequency Drive 0.75kW 2.6A Three-Phase 380V
$1,430.00
2026 Spring PEP New Edition Primary English Grade 3 Volume 2 Four-Line Three-Grid Word Cards for Teachers, Open Class Competition Creative Blackboard Design, Teaching Contest Blackboard Strips and Teaching Aids
$11.30
Cold Brew Yogurt Fermentation Equipment - Manual Old-Style Yogurt Processing and Filling Line
$113,050.00
Electric Spray Painting Pen Set for Babies and Toddlers, Non-Toxic Washable Watercolor Markers, Drawing Tool Kit Toy
$49.50
![[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting](https://www.gosteppe.com/cache/small/product/270133/legacy-main-a12ad5b62abb27a9a45afaf4.png)
[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting
$7.48
Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot and BBQ Odor Removal
$41.00
Office and Home Computer Cable Management Sleeve - Desktop Data Cord Organizer and PC Wire Collector
$6.50
Linear Bearing
$75.47
Thickened Aluminum Alloy Stainless Steel Floor Wire Raceway - Surface-Mounted Cable Cover Protector, Anti-Crush, Self-Adhesive Invisible Design
$2.13
Kids Foam Stamp Brushes - Mushroom-Tipped Painting Set for Kindergarten Art and Graffiti Projects
$2.38
Heisidike HZL-32 Portable Stone Removal Hook for Car Tire Tread Cleaning
$9.28
Bixilage Cheese Processing Equipment – Curd Fermentation Machine for Stretchy Hand-Pulled Cheese Production Line
$67,900.00
Essential Oil Soap Stamping Machine DIY Stamp Maker Semi-Auto Pneumatic Stampler Small Handmade Soap Equipment
$2,173.00
Inverted Barrel Water Stand - Simple U-Shaped Thickened Holder for Purified Water Buckets with Dispenser Outlet
$21.00
Qingling Pickup 2.8T Diesel Isuzu 4JB1-T1 Engine Turbocharger Pump Assembly
$1,502.00
Juli JL-499 Heat Resistant up to 150°C Instant Adhesive High Performance Low Whitening Transparent High-Temperature Fast-Drying Glue
$90.30
Stainless Steel Buffet Warmer with Hydraulic Lift - Commercial Electric Heating Chafing Dish
$882.00
Zhaobei New Felt Calligraphy Mat Anti-Pilling Painting Felt Chinese Painting Cloth Brush Character Calligraphy Felt Pad
$29.70
Fruit Picking Bucket with Shoulder Strap, Manual Fertilizer Spreader, Durable Rubber Harvest Container for Seeds and Chemicals
$26.57
Baohong Artist Grade Watercolor Pad - 100% Cotton Pulp, 300gsm, Glued on Four Sides, Available in 16K, 8K, 4K with Cold Press or Hot Press Texture
$42.00
Commercial Brush Peeling Machine for Sweet Potatoes, Ginger, Taro, Mustard Greens, and Kohlrabi
$15.90
![[Physical Edition] Yuwen Zuowen Jun Exclusive Writing Templates (Suitable for All Grades), Junior and Senior High School Essay Materials](https://www.gosteppe.com/cache/medium/product/302468/legacy-main-c01e86f69af062c1aff61dd9.webp)
