DIN 7978 Solid Dowel Pin Precision Parallel Cylindrical Pin
Keywords:
DIN7978 dowel pin, solid cylindrical pin, precision parallel pin, polished locating pin, 40Cr positioning pin
Overview
DIN 7978 precision solid cylindrical pin is a standardized rigid locating fastener in accordance with German industrial standards. Different from elastic spring pins, this solid pin structure provides ultra-high rigidity, stability and precise repeat positioning accuracy. It is designed for tight-fit positioning, component alignment and fixed connection between shafts, holes and mechanical parts. Each pin is processed with fine polishing treatment with smooth round ball ends, effectively avoiding assembly jamming and ensuring tight and seamless fitting. With stable physical performance and excellent dimensional consistency, it is a fundamental component for mold assembly, fixture calibration and mechanical precision connection.
Material & Surface Treatment
All DIN 7978 solid cylindrical pins are made of high-quality40Cr alloy steel with no heat treatment process required. Adopting professional precision polishing technology, the product features natural smooth finish without plating, black oxide or phosphating treatment. The surface is uniformly coated with anti-rust oil for effective long-term corrosion protection. All pins are strictly processed with smooth rounded ball ends, no obvious tool marks, burrs or scratches on the surface, meeting high-precision assembly appearance and dimensional standards.
Application
DIN 7978 precision solid dowel pins are widely applied in mold manufacturing, precision jigs and fixtures, automation equipment, instrument machinery, automotive tooling, mechanical positioning and component alignment. Suitable for scenarios requiring high precision, high flatness and stable repeated positioning.
| Standard Precision | Strictly manufactured per DIN 7978 standard with high-precision dimensional tolerance and excellent straightness, ensuring accurate positioning for global standard assembly. |
| Premium 40Cr Material | Solid 40Cr steel structure offers high rigidity, good toughness and stable mechanical performance without heat treatment. |
| Exquisite Surface Craft | Precision polished natural finish with smooth rounded ball ends, no tool marks, no burrs, flawless appearance. |
| Effective Anti-Rust | Professional oil coating anti-rust treatment protects the surface effectively, avoiding oxidation and rust during storage and application. |
| Stable Positioning Performance | High surface smoothness ensures tight fitting, stable alignment and excellent repeat assembly accuracy. |
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,
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