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]
Hydraulic oil color is the fastest and cheapest diagnostic tool available — it costs nothing, requires no sample analysis, and provides useful information every time you open the sight glass or pull a dipstick. New ISO VG 46 mineral oil is tran...
VIEW MORE
ISO 6194 specifies requirements for rotary shaft lip-type seals — not percussion seals. A supplier citing ISO 6194 certification as evidence of percussion seal quality is either confused about which standard applies or hoping the buyer is. The ...
VIEW MORE
Brand-level seal failure rate comparisons are almost always misleading without controlling for application. Montabert HC-series drifters are predominantly deployed in European tunneling — high-frequency percussion at 60–80 Hz in limestone...
VIEW MORE
Furukawa-manufactured drifters have a smaller global installed base than Atlas Copco or Sandvik, but they represent a significant share of the underground market in Japan, South Korea, Taiwan, and parts of Southeast Asia — and a meaningful pres...
VIEW MORE
The short answer is no for percussion seals and sometimes for standard-position O-rings — and the reason for the percussion incompatibility is bore geometry, not just bore diameter. Atlas Copco RD-series percussion bores use a specific groove w...
VIEW MORE
NAS Class 9 allows up to 64 particles per mL in the 5–15 μm size range. The percussion bore seal's lip contact zone is approximately 0.8–1.2 mm wide and 280–320 mm in circumference — a contact area of roughly 250–384 ...
VIEW MORE
The distinction between dynamic and static isn't about whether the seal moves — it's about whether the sealing surface moves relative to the seal. A static seal sits between two stationary faces: a manifold gasket, a housing O-ring, a port face...
VIEW MORE
Rotary motor seals run against a continuously rotating shaft — typically 200–600 RPM in rock drill rotation motors — at modest interface velocities. Linear cylinder seals run against a reciprocating rod at higher peak velocity but m...
VIEW MORE
At 4,200 meters above sea level — roughly the operating elevation at several Andean copper and gold mines in Peru and Chile — atmospheric pressure is 61% of sea-level value. That reduction affects the hydraulic rock drill in three ways th...
VIEW MORE
Shore A hardness is a proxy for three things simultaneously: resistance to compression-set under sustained load, resistance to extrusion under high pressure, and flexibility for initial seating against bore micro-geometry. The tradeoffs are real. A S...
VIEW MORE
VG 68 oil in a circuit designed for VG 46 doesn't cause immediate seal failure — it causes a slow thermal failure that looks like early seal fatigue at the 200-hour inspection. The mechanism: higher-viscosity oil at operating temperature create...
VIEW MORE
The piston is the wrong place to start understanding percussion energy. The piston is the output of a hydraulic oscillator, not its cause. The seal lifespan question isn't how hard the piston hits — it's how many times the seal lip traverses th...
VIEW MORE
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
