Ningbo Fenghua Bolong Machinery Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of split bushing in China. Please feel free to buy durable split bushing made in China here from our factory. All customized products are with high quality and competitive price.
Core Advantages
Split Design for Easy Installation - The continuous axial slot permits radial compression during insertion, enabling installation into closed bore holes without pressing or requiring assembly disassembly. Tabs or notches at the split ends can be provided for removal with standard service tools.
Self-Retention Upon Release - The spring-back characteristic of the bushing material - typically 0.05-0.15mm radial expansion after insertion - creates positive engagement with the bore wall. This self-locking behavior eliminates the need for adhesives, staking, or mechanical retainers in many applications.
Cold Extruded Core Structure - The cylindrical portion of the bushing is produced through cold extrusion, ensuring consistent wall thickness, dimensional accuracy, and work-hardened surface hardness. The extrusion process preserves uninterrupted grain flow, contributing to fatigue strength under cyclic loading.
Precision Bore Control - Internal diameters are maintained to tight tolerances - typically H7 or better - ensuring accurate fit with pins, shafts, or fasteners passing through the bushing. Bore surface roughness is controlled to reduce friction and wear on rotating or sliding elements.
Material Flexibility - Available in high-strength steel for maximum load capacity; aluminum alloys for lightweighting and corrosion resistance; and lead-free copper alloys for reduced friction. Each material is matched to the specific installation environment and load cycle.
Consistent Slot Geometry - The axial slot is cut to controlled width - typically 1-3mm - with square or radiused ends as specified. Slot placement relative to the bore axis is held to tight positional tolerances to ensure uniform compression behavior and consistent installed length.
Corrosion Protection Options - Steel versions accept zinc plating, phosphating, or Dacromet coatings. Aluminum versions are available anodized or chem-film coated to MIL or OEM specifications. Salt spray testing is offered for validation.
Technical Specifications
|
Parameter |
Details |
|
Product Name |
Split Bushings - Precision Slotted Cylindrical Components |
|
Materials |
High-strength steel, aluminum alloy (A6061, A7075), copper alloy (option) |
|
Manufacturing Process |
Cold extrusion → slot cutting (wire EDM or milling) → slot deburring |
|
Size Range |
O.D. 8–80mm; I.D. 5–65mm; Length 8–80mm (customizable) |
|
Tolerances |
O.D. ±0.05mm; I.D. H7 (or better); Slot width ±0.10mm |
|
Installed Expansion |
0.05-0.15mm radial expansion (material-dependent) |
|
Surface Treatment |
Zinc plating, phosphating, Dacromet, anodizing, chem-film |
|
Quality Systems |
IATF 16949 certified manufacturing |
Manufacturing Process
|
Stage |
Key Operations |
|
Material Prep |
Coil/bar feeding → cold heading or extrusion slug cutting |
|
Cold Extrusion |
Multi-station former → extrusion to near-net shape |
|
Slot Cutting |
Precision wire EDM or CNC milling → axial slot cutting |
|
Surface & Final |
Deburring → surface treatment → opening width check |
Quality Control
Application Scenarios
Shock Absorber Installation & Service
Split bushings are used at the connection point between the shock absorber lower bracket and the suspension control arm or axle housing. The split design allows bushing replacement without disassembling the control arm or axle - simply compress the split bushing, insert it into the bore, and release for self-locking retention. This feature is particularly valuable in aftermarket service scenarios, significantly reducing repair labor time.
Quick Replacement of Chassis Suspension Bushings
In control arm bushings, stabilizer link bushings, and other chassis suspension components, the split bushing design enables on-site replacement without a hydraulic press. For service facilities without press equipment, split bushings offer an alternative that requires no special tooling while maintaining reliable retention and clamping force.
Heavy-Duty Commercial Vehicle Clearance Adjustment
In the equalizing beam suspension systems of heavy-duty trucks and construction equipment, split bushings are used for thrust rod and equalizing beam connection positioning. The self-locking characteristic of the split design maintains position stability under vibration while allowing rapid disassembly and reinstallation during service.
Custom Services
Design consultation
Engineering evaluation of installation bore geometry, compression allowance, and load requirements
Custom sizing
O.D., I.D., length, and slot width to your drawing specifications
Material selection
High-strength steel for heavy loads; aluminum for weight reduction; copper alloy for low friction
Slot geometry
Standard axial slot; provision for removal tabs; square or radiused ends
Surface treatment to your spec
Zinc plating, phosphating, Dacromet, anodizing, or chem-film
Sample validation support
Prototype quantities for assembly trials and clamp load verification
Whether you need steel split bushings for shock absorber mounting, aluminum split bushings for automotive lightweighting, precision split bushings with tight bore tolerances, or cold extruded split bushings with consistent installed characteristics - our engineering team supports your project from concept through validation and volume production.
Contact Us for Your New Project
Hot Tags: split bushing, China split bushing manufacturers, suppliers, factory, Aluminum Split Bushings for Automotive, Cold Extruded Split Bushings, High Strength Steel Bushings, Special Bushings for Automotive, Specialty Machined Bushings, Standard Bushing
