Manufacturer of leaf springs, stamped and bent parts, wire bent parts and contact springs made of stainless steel and non-ferrous metals – from toolmaking through to series production
Reinhold Bürkle Technische Federn GmbH
71394 Kernen im Remstal (Headquarters / Production)New on Amplifa
About us
Reinhold Bürkle Technische Federn GmbH is a medium-sized manufacturer of technical springs based in Kernen im Remstal near Stuttgart. Founded in 1965, the family-owned company produces leaf springs, stamped parts, stamped and bent parts, wire bent parts, contact springs and precision parts custom-made to drawing – without catalogue or stock items. The value chain extends from tool design (CAD/CAM) via in-house toolmaking and stamping and bending technology to heat treatment, deburring, vibratory grinding, assembly and kitting, including reel-to-reel delivery. Production is carried out using stainless spring strip steel, spring wire according to DIN EN 10270-1, carbon steels and non-ferrous metals such as copper, brass, bronze, copper-beryllium and aluminium, as well as special materials. Customers come from the automotive, electrical engineering, electronics, medical technology, mechanical engineering, outdoor power equipment and household appliance industries and are supplied worldwide. Tension, compression, torsion, helical and disc springs are offered in cooperation with long-standing partners.
- Site
- Kernen im Remstal
- Processes
- Manufacture leaf springs / stamped and bent parts, Stamping (stamped parts, progressive dies), Wire bent parts / CNC bent parts (wire diameters 0.80 to 2.50 mm), Bending of shaped springs, torsion springs, retaining springs, Stamping precision springs / contact springs (widths 0.40 to 150 mm, thicknesses 0.10 to 1.50 mm), Manufacture EMC contacts, stamped grids, conductor tracks, connector pins, Toolmaking (design with CAD, CAM, CNC), Heat treatment in in-house circulating air ovens
- Materials
- Stainless steel 1.4310, Stainless steel 1.4301, Stainless steel 1.4571, Stainless steel 1.4568, Spring strip steel (stainless), Spring wire according to DIN EN 10270-1, Carbon steels, S235JR
- Certificates
- ISO 9001:2015, IATF 16949:2016
- Founded
- 1965
- Employees
- 65
- Industries
- Automotive, Electrical engineering, Electronics, Medical technology, Household appliances, Garden equipment
- 01
Tool design (CAD/CAM)
- 02
In-house toolmaking
- 03
Prototyping and sample production
- 04
Stamping and bending (stamped and bent parts, wire bent parts, precision parts)
- 05
Heat treatment
- 06
Deburring / vibratory grinding / tumble finishing
- 07
Coating (electroplating, zinc flake, paint – via partners)
- 08
Assembly and joining (welding, riveting, screwing, bonding)
- 09
Kitting and packaging (trays, belting, reel-to-reel)
- 10
Quality inspection with optical metrology and CAQ
Locations
Kernen im Remstal
DEHeadquarters / Production
- Part weight / size
- Strip widths up to 250 mm; material thicknesses 0.10–2.00 mm
- Lot size
- Prototype, small, medium and large series
- Materials
- Stainless steel 1.4310/1.4301/1.4571/1.4568, spring strip steel, spring wire DIN EN 10270-1, carbon steels, Cu, CuZn,
- 5 Bihler stamping and bending machines RM-NC
- 3 Wafios CNC wire bending machines FMU 25+
- Biegema CNC wire bending machines
- High-speed stamping presses
- Servo presses
- Hydraulic presses
- Eccentric presses
- Circulating air heat treatment ovens
- Vibratory grinding machines (round tubs)
- Tumble finishing systems
- Optical metrology Keyence, Mahr, Zwick, Mitutoyo
- CAQ system Böhme & Weihs
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture leaf springs / stamped and bent partsForming | – | Strip widths up to 250 mm | – | – | Stainless steel 1.4310, 1.4301, 1.4571, 1.4568, Carbon steels, Non-ferrous metals, Aluminium, Inconel, Duratherm, Spring strip steel |
| Stamping (stamped parts, progressive dies)Forming | – | – | – | – | Stainless steel, Spring strip steel, Carbon steels, Copper, Brass, Bronze, Aluminium |
| Wire bent parts / CNC bent parts (wire diameters 0.80 to 2.50 mm)Forming | – | – | – | – | Stainless steel 1.4310, 1.4301, 1.4568, 1.4571, DH wires, SH wires, SM wires, Non-ferrous metals, Special materials, Flat wire, Profile wire, Square wire |
| Bending of shaped springs, torsion springs, retaining springsForming | – | – | – | – | Stainless steel, Spring steel wire, Non-ferrous metals, Special materials |
| Stamping precision springs / contact springs (widths 0.40 to 150 mm, thicknesses 0.10 to 1.50 mm)Forming | tight tolerance control | 0.40 to 150 mm × Thickness 0.10 to 1.50 mm | – | – | Stainless spring strip steel, Spring steels, Cu, CuSn, CuZn, CuBe, Aluminium, S235JR, Duratherm, Inconel |
| Manufacture EMC contacts, stamped grids, conductor tracks, connector pinsForming | – | – | – | – | Stainless spring strip steel, Cu, CuSn, CuZn, CuBe |
| Toolmaking (design with CAD, CAM, CNC)Engineering | – | – | – | – | – |
| Heat treatment in in-house circulating air ovensHeat treatment | – | – | – | – | Leaf springs, Stamped and bent parts, Wire bent parts |
| Vibratory grinding / tumble finishing (deburring, edge rounding approx. -0.03/-0.10)Surface | – | – | – | – | – |
| Chemical deburringSurface | – | – | – | – | – |
| Electroplated coatings (galvanizing, tin plating, nickel plating, gold plating, silver plating,Surface | – | – | – | – | – |
| Zinc flake coating (Delta-Tone, Delta-Seal, Microcor) via partnerSurface | – | – | – | – | – |
| Wet painting, powder coating, selective coating of pre-stamped strips via partnerSurface | – | – | – | – | – |
| Sub-assembly assemblyAssembly | – | – | – | – | – |
| Shielded gas, projection and spot weldingJoining | – | – | – | – | Stamped and bent parts |
| Riveting (screws, nuts, pins)Joining | – | – | – | – | – |
| Screwing, bonding, kitting, packaging (trays, belting, reel-to-reel)Assembly | – | – | – | – | – |
| Prototyping and sample part productionEngineering | – | – | – | – | – |
| Optical metrology (2D, 3D, contour and spring force measurement)Inspection | – | – | – | – | – |
| Tension springs, compression springs, torsion springs, helical springs, disc springs in cooperationForming | – | – | – | – | – |
13 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| CNC-controlled stamping and bending machine | Bihler RM-NC | 5 | – | erste 2020 | Kernen im Remstal |
| CNC wire bending machine | Wafios FMU 25+ | 3 | – | 2023 (letz | Kernen im Remstal |
| High-speed stamping presses | – | – | – | – | Kernen im Remstal |
| NC-controlled stamping and bending machines | Bihler | – | – | – | Kernen im Remstal |
| CNC-controlled wire bending machines | Wafios, Biegema | 3 (Wafios) | – | – | Kernen im Remstal |
| Servo presses | – | – | – | – | Kernen im Remstal |
| Hydraulic presses | – | – | – | – | Kernen im Remstal |
| Eccentric presses | – | – | – | – | Kernen im Remstal |
| Circulating air heat treatment ovens | – | – | – | – | Kernen im Remstal |
| Vibratory grinding machines (round tubs) | – | – | – | – | Kernen im Remstal |
| Tumble finishing systems | – | – | – | – | Kernen im Remstal |
| Optical metrology / measuring systems | Keyence, Mahr, Zwick, Mitutoyo | – | 2D, 3D, contour and spring force measurement | – | Kernen im Remstal |
| CAQ system | Böhme & Weihs | – | – | – | Kernen im Remstal |
Additional services
Reference customers
Quality
The quality management system is certified according to IATF 16949:2016 and DIN EN ISO 9001:2015 and is confirmed by annual surveillance audits. Inspection is performed with digital optical metrology (2D, 3D, contour and spring force measurement) and through CAQ-supported process monitoring (Böhme & Weihs).
| Evidence | Kernen im Remstal |
|---|---|
| ISO 9001:2015 | |
| IATF 16949:2016 |
History
- 1965
Founded on 1 July 1965 in a garage in Fellbach by Reinhold Bürkle
- 2020
Commissioning of a CNC-controlled stamping and bending machine Bihler RM-NC
- 2022
Entry of third-generation family members into various departments
- 2023
Commissioning of a Wafios FMU 25+; three Wafios CNC wire bending machines in operation
- 2025
60th company anniversary and fifth commissioning of a Bihler RM-NC