Alfred Kron GmbH from Solingen is your experienced B2B manufacturer for high-precision sleeves and bushings (as stamped and bent parts, or "slotted bushings" on Bihler) made to drawing – indispensable connecting elements in mechanical engineering, automotive and industrial plants. With decades of experience in stamping and stamping-bending technology, we produce components that meet the highest requirements for precision, load capacity and durability.
Sleeves and bushings serve as bearing or guiding elements that enable movements between components, distribute forces and reduce wear. Typical applications are plain bearings, guide elements, axle connections or protective and spacing functions in assemblies.
Production takes place on state-of-the-art systems and includes: precise stamping and stamping-bending technology, CNC machining of complex geometries, surface treatment (galvanizing, nickel-plating, sliding coatings) as well as optional plastic inserts via our own injection molding machines (Arburg, Battenfeld, Netstal). Through strict quality assurance, a high-quality product is created that can be reliably used in demanding applications.
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Bushings for plastic reinforcement
Bushings for plastic inserts
Sleeves and Bushings as Drawing Parts – Your Manufacturer for Precision Production
Indispensable components in industry
High-precision sleeves and bushings are central components for smooth operation, secure connections and long service life. Alfred Kron GmbH produces spacer sleeves, plain bearing bushings, positioning bushings, spacer bushings and plastic-insert bushings for mechanical engineering, automotive, industrial plants and special solutions – from prototypes to series production in all higher batch sizes.
What are sleeves and bushings?
Sleeves and bushings are bearing or guiding elements that:
- Enable movements between components
- Distribute forces and reduce wear
- Take on protective and spacing functions
Typical applications: plain bearings, guide elements, axle and shaft connections, spacer and mounting bushings, as well as spacer sleeves.
Manufacturing Technologies at Alfred Kron
Material selection:
- Steel strip C75 S – for high load capacity, hardenable
- Stainless steel 1.4301 and 1.4310 – corrosion resistance
- Brass/bronze – good sliding and wear properties
Metalworking:
- Precise stamping and stamping-bending technology on Bihler stamping-bending machines
- CNC machining of complex geometries
- Surface treatment: galvanizing, nickel-plating, Gliss Coat, Delta Seal, trowalizing
Plastic inserts (optional):
- Integration of plastic bushings for sliding or insulation purposes
- Own injection molding production on Arburg, Battenfeld and Netstal
Assembly & quality assurance:
- Dimensionally accurate production for optimal fit
- Strict test procedures for load capacity, tolerance and service life
- Customer-specific adaptations for individual applications
Result: high-quality sleeves and bushings, precise, robust and durable.
Practical Example
At Alfred Kron GmbH, we produce "slotted bushings" for the support function in the screw-on area of plastic components in a wide variety of dimensions in material thicknesses from 0.25 mm to 2.0 mm. Available in all common surface coatings that offer corrosion protection and improved sliding properties. These combinations of high-quality crack-resistant production on our Bihler machines, spring steel strip and electroplated coatings from our certified suppliers give our customers confidence and security. Numerous successful continuous load tests and salt spray tests document the confidence in our products such as bushings and sleeves.
Our resilient bushings are used as support elements for the automated installation of ABS brake sensors.
High-precision bushings are produced at Kron within an H7 tolerance field, to substitute turned parts that are used as fitting bushings.
Properties of Sleeves and Bushings
- High mechanical stability and load capacity
- Low wear on moving parts
- Precise fit
- Corrosion resistance through suitable materials
- Versatile use in industry, automotive, mechanical engineering
- Optional: plastic-integrated sliding or insulation bushings
Areas of Application
Mechanical engineering & industry: guidance of shafts, protection of bolts, precision components in assemblies
Automotive: bearing bushings for axles and transmissions, connecting elements for chassis and body
Furniture and construction industry: sliding and guide elements, mounting and spacer bushings
Special solutions: combination of metal and plastic, customer-specific components
Alfred Kron – Your Manufacturer for Precision Sleeves and Bushings
As an experienced manufacturer from Solingen, Alfred Kron produces sleeves and bushings to drawing from tool development to series production – including surface treatment and optional plastic integration:
- Decades of experience in stamping and stamping-bending technology
- Own plastic injection molding production for hybrid components
- Precision production in series production
- Certified supplier to IATF 16949 and ISO 14001
Bushings guide sleeves
Bushings positioning bushing
FAQ
How are sleeves and bushings defined?
Sleeves and bushings are defined as cylindrical components used as casings or bearing shells to support or connect components. They are important in many industrial applications.
For which applications are they used?
They are used in the mechanical engineering industry, in the automotive sector and in electrical engineering, particularly for connections and as bearing components.
Which materials are suitable for sleeves and bushings?
At Kron, sleeves and bushings are produced from spring steel strip (C 75S, 1.4301 or 1.4310), depending on the mechanical requirements and the application.
How are sleeves and bushings manufactured?
At Kron, production takes place on Bihler stamping-bending machines. Through the bending of steel strip and spring steel strip on Bihler stamping-bending machines, our sleeves and bushings are produced as "slotted bushings". These processes ensure high production speed, precise fit and strength.
Can sleeves and bushings be produced in various sizes?
Yes, sleeves and bushings can be produced in a wide variety of sizes and shapes, adapted to the specific requirements of the application.
What advantages do sleeves and bushings offer in industry?
Sleeves and bushings offer a cost-effective, economical and reliable solution for connecting and bearing components in machines and devices.
How high is the load capacity of these components?
The load capacity depends on the material used. Steel or stainless steel bushings offer a high load-bearing capacity, while plastic bushings are suitable for lighter applications.
Can sleeves and bushings also be provided with special surface treatments?
Yes, they can be provided with coatings such as sliding varnish (e.g. Gliss-Coat) or other functional anti-corrosion coatings to increase corrosion resistance and service life, particularly for outdoor applications or in damp environments. Galvanizing, nickel-plating or Delta-Seal are suitable here, for example.
Do you offer individual special solutions?
Yes, we offer the production of sleeves and bushings tailored to the specific requirements of our customers, which can be ordered directly from us. We produce your sleeves and bushings exactly as drawing parts according to your individual CAD specifications or according to your PDF drawing in larger series. Series production of sleeves and bushings with plastic integration is also possible.
How quickly can sleeves and bushings be produced to drawing?
The production time depends on the complexity of the part, but we generally offer fast delivery times for standard as well as custom-made sleeves and bushings.
Conclusion
Sleeves and bushings made of steel strip are central components for smooth movements, secure connections and durable applications. With Alfred Kron GmbH as manufacturer and supplier, customers receive precise and durable solutions for sleeves and bushings made to drawing – from development through prototypes to series production.
Send us your inquiry for sleeves and bushings now!
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Please send us the relevant technical drawing, a sketch and/or CAD data (STEP, DWG, DXF, IGES) for your request, along with the desired quantities and batch sizes.
If available, technical information regarding installation and use, or specific quality requirements, could also be important for us.
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We look forward to your inquiry and will get back to you as soon as possible.
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