The Rock Drill works according to the principle of impact crushing.When working, the piston makes high frequency reciprocating motion, continuously impinge the drill bit tail.Under the action of impact force, the rock is crushed and cut into a certain depth by a wedge shaped drill head, forming a concave mark.When the piston returns, the solder rotates at a certain Angle, and the piston moves forward.The fan shaped block between the two notches is sheared by the horizontal force produced by the drill head.The piston continuously impinges on the end of the drill and continuously inputs compressed air or pressure water from the core hole of the drill to discharge the rock slag out of the hole, which is to form a circular hole with a certain depth Pneumatic Rock Drill,Pneumatic Rock Hammer Drill,Pneumatic Manual Rock Drill,Pneumatic Air Rock Drill Jining Dongda Electromechanical Co.,Ltd. , https://www.coal-mine-equipment.comCylindrical Rubber Fender
Cylindrical rubber fender is commonly used for all applications, bulk cargo berths, fishing and workboat berths, general cargo quays, pontoons and floating structures, roro and ferry terminals, tugboats and havens, etc. It is well capable of absorbing forces and loads and easy to install and maintain.
Features:
PRODUCT INTRODUCTION
Specifications:
Type
Outer Dia. (mm)
Inner Dia. (mm)
Length
Rated Compression
150
150
75
All length can be supplied to meet you request.
50%
200
200
100
250
250
125
300
300
150
350
350
175
400
400
200
450
450
225
500
500
250
600
600
300
700
700
350
800
800
400
900
900
450
1000
1000
500
1100
1100
550
1200
1200
600
1300
1300
650
1400
1400
700
1500
1500
750
1600
1600
800
1800
1800
900
2000
2000
1000
Note: different sizes of cylindrical rubber fender can be made according to your request.
Â
Cylindrical Rubber Fender Best Quality
Structure: Floating
Type: Yokohama-Type, Net-Type, Sling-Type
Service Life: 10-20years
Certification: BV, ISO9001, CCS, ISO17357, ABS, Dnv, Lr
Capability: Water Rubber Hose
Load Capacity: >8000teu
Usage: Trade, Ship Launching, Protection, Ship Docking
Trademark: Star-Marine
HS Code: 40169400