DIN 7 Taper Pin 40Cr Polished Precision Taper Locating Pin
Keywords:
DIN7 taper pin, 1:50 taper locating pin, 40Cr taper pin, polished taper pin, mechanical positioning fastener
Overview
DIN 7 precision taper pin is a standardized 1:50 taper positioning fastener formulated by German industrial standards. Different from straight cylindrical pins, its professional 1:50 uniform taper design enables automatic center alignment and gradual interference fit during installation. The deeper the pin is pressed in, the tighter the fit, forming reliable self-locking and anti-loosening effect without auxiliary fastening parts. Both ends adopt smooth spherical structure with consistent radian, effectively avoiding assembly jamming and surface scratching during installation. With high dimensional accuracy, good interchangeability and stable positioning repeatability, it is widely used for component alignment, fixed connection and precision calibration of mechanical equipment.
Material & Surface Treatment
All DIN 7 taper pins are made of premium 40Cr alloy steel with no heat treatment required. The material features stable toughness and balanced mechanical properties to meet conventional precision positioning requirements. Adopting high-precision polishing process, the product retains the original natural steel finish without phosphating, black oxide or electroplating treatment. The whole body is evenly coated with anti-rust oil for durable oxidation and corrosion resistance. Strict fine machining ensures smooth and consistent spherical ends on both sides, with no obvious tool marks, burrs or scratches on the entire surface, fully compliant with high-standard precision assembly requirements.
Application
DIN 7 40Cr taper pins are widely used for precise positioning, centering alignment and anti-loosening locking in general mechanical equipment, mold assemblies, precision jigs and fixtures, automation machinery, instrument equipment and automotive tooling, suitable for various precision assembly scenarios requiring automatic centering and stable locking.
| Standard Taper Precision | Strictly manufactured per DIN 7 standard with standard 1:50 taper ratio, accurate tolerance and excellent interchangeability for global universal assembly. |
| Stable 40Cr Material Performance | High-quality 40Cr alloy steel with good toughness and structural stability, no heat treatment needed for stable daily positioning and locking. |
| Self-Locking & Firm Fit | 1:50 taper design realizes automatic centering and gradual tight fit, providing strong self-locking performance and stable anti-loosening effect. |
| Exquisite End Surface Craft | Both ends with smooth and consistent spherical radian, no tool marks or burrs, ensuring smooth and damage-free assembly. |
| Reliable Anti-Rust Protection | Uniform anti-rust oil coating isolates air oxidation, maintaining smooth surface and long-term stable performance during storage and application. |
Top Sellers
Eugene (Wenzhou) Industry Co., Ltd is a specialized manufacturer focused on fastening products, delivering trusted solutions to global partners.
Frequently Asked Questions
product
What core advantages does standard DIN471 external circlip have over non-standard snap rings?
Produced per DIN471 & EN10132-4, it features precise dimension matching standard grooves. Made of 65Mn/C67S, it delivers outstanding anti-fatigue performance and resists loosening under long-term vibration.
How to maintain DIN472 when elastic weakness appears during equipment inspection?
Fatigued circlip cannot be restored; replace with brand-new DIN472 and forbid repeated usage of deformed old parts.
Standard installation operation of DIN6799 circlip?
Align E opening with shaft groove and press down vertically with flat screwdriver until fully seated.
Benefit of phosphated surface for DIN2093 during component service?
Phosphating improves rust and wear resistance to extend service life of DIN2093 inside hydraulic cylinders and high-pressure valves.
Self-locking fixing principle of DIN1481 slotted spring pin?
Slotted body shrinks during pressing and rebounds to expand against hole wall, forming radial preload for self-lock positioning.
business
How to select material of ISO8752 reasonably for different working environments?
Choose 65Mn black oxide carbon steel for dry indoor machinery, auto chassis and general reducer; switch to stainless steel ISO8752 for damp, oily and corrosive working conditions like water pumps and food equipment.
Correct disassembly method for DIN1 during mould maintenance?
Eject DIN1 from opposite end via pin punch; violent hammering is forbidden to avoid bore deformation.
Solution for stuck DIN7 taper pin during equipment overhaul?
Knock out from big end; drill and replace new DIN7 if severely rust locked.
Heat treated quenched steel strip includes blued strip and polished strip, what are respective advantages of two surface types?
All heat treated quenched steel strip is fully quenched with high hardness and stable elasticity. Blued steel strip forms uniform blue oxide layer for natural rust resistance with high cost performance; polished steel
What are the core advantages of annealed steel strip compared with semi-hard strip and heat treated quenched steel strip?
Made from 65Mn, C67S and other spring steel grades, annealed steel strip gets full full-annealing stress relief treatment. It owns the best ductility among three types of steel strips, hardly cracking during bending,
We Are Professionals
CONTACT US
Adhering to the tenet of Quality First for Sustainable Development, we rely on advanced production facilities and standardized quality management to supply dependable high-end products and bespoke services worldwide.