Hanger Bolts have threaded areas at both ends, a lag screw thread at one end and machine screw thread on the other. They are designed for insertion into a pre-drilled hole and are ideal for overhead application, usually in a wall or ceiling. Plain finish, or bare metal, may or may not have a coating of light oil to resist corrosion. Plain finish, or bare metal, may or may not have a coating of light oil to resist corrosion.
Available Material: Hanger Bolt,Headless Screws,Metric Steel Hanger Bolt,Double Thread Hanger Bolt Ningbo Brightfast Machinery Industry Trade Co.,Ltd , https://www.brightfastener.com
Common Fault 1: The secondary needle does not stop accurately at any position and fails to align with the main needle. To resolve this, remove the dial glass, adjust the compression spring screw on the secondary needle, and realign it with the main needle for proper synchronization.
Common Fault 2: The pointer shows poor sensitivity, stops unexpectedly after unloading, or frequently shifts from the zero position. This issue can be caused by several factors:
1. Obstruction in the pendulum movement, or a dirty or rusted pendulum shaft, which may cause the pointer to return to zero incorrectly.
2. Increased resistance or sticking of the piston inside the cylinder. Apply chrome oxide paste to the piston until smooth operation is restored.
3. A loose or improperly tensioned belt on the force-measuring piston, leading to inconsistent piston speed.
4. Poor oil return from the buffer system, requiring adjustment or cleaning.
5. Contact between the rack and gear, which should be loosened to allow free movement.
6. A dirty pivot shaft of the pointer, which needs cleaning to ensure smooth rotation.
7. Excessive dust or rust on the rack pulley and its track. Clean thoroughly and apply a small amount of watch oil for smoother operation.
Electro-hydraulic universal testing machines are widely used in laboratories and production lines, making them prone to wear and malfunction over time. It’s essential to understand common issues and their solutions to maintain efficiency and avoid production delays caused by equipment failure. Regular maintenance and prompt troubleshooting are key to ensuring continuous and accurate performance.
An electro-hydraulic universal testing machine typically consists of two main types: hydraulic and electronic. These machines usually feature one or more vertical columns, a fixed horizontal base mounted on the column, and a movable crosshead located at the top. Modern designs often include a ball screw mechanism on the column to secure the crosshead in place. The size and capacity of the machine are defined by the maximum load it can handle and the dynamometer that measures the applied force or tension. The dynamometer is connected to the movable crosshead, which is driven by an electric motor or hydraulic system, enabling precise control and measurement during testing.
By understanding the structure and common problems of these machines, operators can better maintain and troubleshoot them, ultimately improving productivity and reducing downtime.
1.StainlessSteel:SS201,SS303,SS304,SS316,SS410,SS420
2.Steel:C45(K1045), C46(K1046),C20
3.Carbon Steel: 1010,1035,1045
4.Aluminum or Aluminum Alloy:Al6061,Al6063,Al7075etc
5.Brass:H59,H62,Copper,Bronze
Surface Treatment:Plain, Zinc-plated, Yellow Zinc-plated, Black Zinc-plated, Brass-plated, Cadmium, Geomet, Dacromet, HDG, Nylok, Black-Oxide, Nickel-Plating, Phosphatizing, Powder Coating and Electrophoresis.
Standard:ISO, DIN, ANSI, JIS, BS and Non-standard.
Certificate:GB/T19001-2008/ISO9001:2008
It can match ROHS,SGS and environment protection
Manufacture Process:Raw Material/QC/Heading/Threading/Heat Treatment/Surface Treatment/QC Inspection/Sorting and Packing/Shipping
Sample Service:Samples for standard stainless steel fasteners are all in free.
Lead Time:25-45 days after order confirmed
Packing:25Kg/Carton,bulking,36Carton/Pallet
Carton Size:18*26*28cm or customized
Warranty:We confirm we provide the products will satisfied your request 100%
After-salesService:We will follow up every customer and solve all your problems satisfied after sales
Common faults and elimination of electro-hydraulic universal testing machine