33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
Home / Products / Rock drill diaphragm / Etc.
This heavy-duty leather cup and diaphragm repair kit is specially developed for Etc.DNCD300EX-HIGH hydraulic rock drills, widely adopted in mine tunneling, quarrying and underground engineering machinery. It covers full set of core wearing parts including integral leather cups, pressure-resistant rubber diaphragms, O-rings, gaskets and anti-extrusion backup rings for complete drill overhaul.
Manufactured with imported reinforced NBR and high-performance FKM fluororubber composite leather material, the kit boasts outstanding oil resistance, anti-abrasion, low-temperature flexibility and high-pressure fatigue resistance. It fully matches original factory component dimensions, effectively solves common rock drill faults such as internal oil leakage, insufficient impact force and pressure attenuation, greatly extending the service life of DNCD300EX-HIGH rock drill under continuous heavy-load mining operations.
Item |
Detailed Parameter |
Product Name |
DNCD300EX-HIGH Rock Drill Leather Cup & Diaphragm Seal Kit |
Applicable Model |
Etc.DNCD300EX-HIGH High-Pressure Hydraulic Rock Drill |
Compatible Series |
Etc DNCD Series Hydraulic Rock Drill |
Main Material |
Imported Reinforced Composite Leather + NBR / FKM Fluororubber + Reinforced Backup Ring |
Max Working Pressure |
32MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Integral leather cups, hydraulic diaphragms, shaft seals, O-rings, metal gaskets, anti-extrusion backup rings, full overhaul spare parts |
Cross Reference OEM No. |
DNCD300EX-HIGH, 300EX980721 |
Net Weight |
Approximately 1.1kg |
Applicable System |
High-pressure impact hydraulic system for rock drill |
Warranty |
12 Months |
Fully dimensional consistent with original Etc DNCD300EX-HIGH rock drill parts, matching OEM part numbers DNCD300EX-HIGH and 300EX980721. Zero modification required for quick on-site installation, perfectly replacing factory original leather cups and diaphragms.
Core leather cups and diaphragms adopt imported composite leather + FKM fluororubber integrated molding process, featuring excellent oil corrosion resistance, anti-aging and anti-cracking performance. Stable sealing performance maintained under -30°C low-temperature mine and 120°C high-temperature continuous working conditions.
All components pass strict 32MPa high-pressure fatigue cycle testing. Effectively eliminate internal and external hydraulic leakage of rock drill, stabilize impact pressure and impact energy, avoid drill power drop, weak drilling and slow penetration rate caused by failed diaphragms and leather cups.
Integrates all wearing sealing accessories required for full machine maintenance of DNCD300EX-HIGH rock drill. Complete matching parts reduce repeated purchasing and on-site repair downtime, lower overall equipment maintenance operating costs.
Every set of repair kit undergoes air tightness, high-pressure impact and accelerated aging tests before delivery, fully complies with OEM manufacturing standards, delivering long-term stable and reliable performance under harsh mining working conditions.
Designed exclusively for Etc.DNCD300EX-HIGH hydraulic rock drills, widely applied in all kinds of heavy-duty rock breaking engineering equipment: • Underground mine tunneling rock drills • Open-pit quarry drilling rigs • Tunnel excavation construction machinery • Hydraulic rock drill supporting power stations • High-pressure impact hydraulic transmission systems • Heavy mobile mining & rock breaking equipment
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
EN
AR
CS
DA
NL
FI
FR
DE
EL
IT
JA
KO
NO
PL
PT
RO
RU
ES
SV
TL
IW
ID
LV
SR
SK
VI
HU
MT
TH
TR
FA
MS
GA
CY
IS
KA
UR
LA
TA
MY
