Slipper Rotoslipper rotary shaft seals

OVERVIEW

Radial shaft seals for slow rotational movements, fast translational movements and combined roto-translational movements.
Working conditions: Max. pressure 800 bar
Temperature range -60 a + 150°C.
Rotational movements: up to 120 rpm with max peripheral speed of 0.6 m/sec
Translational movements: max 5 m/sec
At max temperature and/or in dry running conditions, pressure and speed should be adequately reduced.
Please contact our technicians for evaluating working conditions and the thermal analysis of the project.

High quality Parker O-Rings only.
HD Slippers Srl supplies only high quality Parker O-Rings within its own Rotoslipper rotary Seal kits.

Homepage Rotary Shaft Seals

NCSR

Housing class	D shaft		E groove diameter	L groove width	R	S min	G*					In closed groove
	standard groove	special groove					max. radial gap					if D>=
	f7		H9	H12			Bar 50	100	200	400	800
K1	6 - 24,9	3 -100	D + 4.9	2.2	0.4	1.2	0.2	0.2	0.15	0.1	0.05	16
K2	25 - 59,9	8 - 250	D +7,5	3.2	0.6	2.2	0.35	0.3	0.25	0.15	0.07	20
K3	60 -132,9	10 - 450	D + 11.0	4.2	0.8	2.6	0.5	0.45	0.25	0.15	0.07	50
K4	133 - 329,9	15 - 650	D + 15,5	6.3	1	5.6	0.6	0.45	0.25	0.15	0.1	100
K5	330 - 654,9	120 - 1100	D + 21.0	8.1	1.5	8.2	0.8	0.5	0.3	0.15	0.1	150
K6	655 -1100	120 - 1100	D + 24,5	8.1	1.5	8.2	0.8	0.5	0.3	0.15	0.1	180
K7	655 - 1100		D + 28.0	9.5	1.5	9.5	0.9	0.6	0.4	0.15	0.1	150
G*=G1+G2+G3		G1 = Max. initial clearence G2 = Clearence by elastic deformation of the components under pressure G3 = Clearence due to the forseen wear of the guiding elements

Coding example
profile code NCSR rod 100 housing class K3 materials: Neuflon 031 O-Ring NBR	Rotoslipper NCSR 100 K3 N-031 NBR

assembly

SLIPPER COMPOSITE SEALS ASSEMBLING INSTRUCTIONS

ASSEMBLY ON PISTON IN CLOSED GROOVE AND IN OPEN GROOVE

Assembly in closed groove can be carried out manually, however the use of the appropriate equipment guarantees the integrity of the slipper and time-saving insertion.

Assembly in open groove is suggested for slippers exceeding the dimensions shown in dimensional table.

Correctly carried out introduction blunting and the lubrication of the surfaces make assembly easier.

For an easier assembling in closed groove the preheating of the Slipper in oil or water bath at 90-100°C is suggested.

INSERTION AND RECALIBRATION EQUIPMENT FOR INSTALLATION IN CLOSED GROOVES ON THE PISTON

The expander cone brings the Slipper to the diameter of the piston, or to the edge of the groove when other existing grooves must be passed over.

The thruster expands sector by sector, or more simply, in single logitudinal cutting.

Both the cone and thruster can be made in acetal resin (POM), polyester (PBTF) or polyamide (PA6)

The prolonged extended permanence of the Slipper during installation could determine a permanent increase in diameter; therefore fast installation is advised.

Recalibration of the slipper may be opportune using a sleeve before insertion of the piston in the cylinder.

The sleeve also allows the passing over of grooves and threads.

INSTALLATION ON THE CYLYNDER IN CLOSED GROOVE

The Slipper seal can be introduced in the closed groove imposing a reniform deformation.

The radius R should never be little then 3 times S

Open groove installation is advised for rods exceeding the diameter shown in dimensional table.

The mono-directional R type Slipper is
installed using this method of positioning
the seal-front towards the pressure.

finishes

SURFACE FINISH ACCORDING WITH FLUID
application	max Ra µm dynamic surface	max Ra µm static surface
CRYOGENICS	0,1	0,2
FREON HELIUM HYDROGEN	0,2	0,3
AIR NITROGEN ARGON METHANE FUELS	0.2	0.4
WATER OIL	0.3 - 04	0.6
ROTARY SEALS
Shaft surface Ra 0.2 - 0.3 micron max. Rz 1.0 - 2.5 micron max. R max. < 4 micron	Shaft hardness 55 HRC min. for pressure up to 5 bar 60 HRC min. for pressure > di 5 bar 60 HRC for speed > 4m/sec	Surface treating deep 0.3 mm min.

materials

Click compound's code to download the .PDF data sheet. Login required.

HD Slippers code	Composition	Color	Approvals	ΔT °C	Description
N-009	Ptfe-oxides	blue		-268 +260	All pourpose on soft surfaces
N-095	Tfm	white	FDA	-268 +260	Low creep, better strength.
N-031	Ptfe-bronze	green-blue		-268 +260	High wear resistance, hidraulic seals
N-032	Ptfe-carbon	black		-268 +260	High wear resistance, pneumatic and hydraulic seals
N-197	Ptfe-carbographite	black	NORSOK	-268 +260	High wear resistance, hydraulic and pneumatic seals
N-043	Ptfe-graphite	black	FDA	-268 +260	High wear resistance, low friction coefficient.
N-060	Ptfe-glass fibre	blue	FDA	-268 +260	All pourpose on hard surfaces
N-067	Ptfe-glass fibre	white	FDA NORSOK	-268 +260	High wear and creep resistance
N-033	Ptfe-glass fibre MoS2	gray	FDA	-268 +260	Fit for hard surfaces
N-103	Ptfe-Carbon fibre	black		-268 +260	Fit for hard surfaces
N-102	Ptfe-Liquid crystal polymer	beige	FDA - EU	-268 +260	Food & Pharma, fit for soft surfaces
N-088	Ptfe-polyimide	yellow		-268 +260	Fit for soft surfaces
N-074	PEHMW	white	FDA	-140 +80	High wear and extrusion resistance
N-155	PVDF	white	FDA	-30 +140	High modulus
P95-A252	Polyurethane	blue	FDA	-50 +105	Extrusion and wear withstanding, low friction coefficient
P95-VI251	Polyurethane	violet	FDA	-30 +115	CIP (clean in place) fluids compatible
P95-R198	Polyurethane	red		-30 +125	Extrusion and wear withstanding, low friction coefficient, high temperatures
P95-AR255	Polyurethane	orange		-30 +135	Extrusion and wear withstanding, low friction coefficient, higher temperatures
P95-G253	Polyurethane MoS	gray		-30 +105	Extrusion and wear withstanding, lower friction coefficient

CHOOSING Neuflon-ptfe compound ACCORDING WITH FLUID AND SURFACE
	SURFACES
	Steel HEC>=30-45 Temp. Mart. Inox Steel Cast Iron HRB<=200 Steel HRC>=45 Cast Iron HRB>200	Galvanic or chemical surfacing HV>=700 Chromium Bronze	Bronze Brass	Treated Aluminium	Aust. Inox Steel Glass
FLUIDS	NEUFLON-ptfe compounds (standard in bold)
Hydraulic oil Transmission oil Fire resistant syntetic hydraulic oil	N-031 N-032 N-060 P95-A112	N-031 N-032 N-060 P95-A112	N-009 N-043 N-032 P95-A112	N-032 N-074 P95-A112	N-009 N-032 N-074 P95-A112
Water and oil/water emulsions	N-032 N-060 N-074	N-032 N-060 N-074	N-009 N-043 N-074	N-032 N-074	N-009 N-032 N-074
Drugs and food	N-074 N-102 N-043 N-060 N-095 P95-B113	N-009 N-074 P95-B113	N-102 N-009 P95-B113	N-009 N-074 P95-B113	N-009 N-074 P95-B113
Air	N-032 N-031 N-043 N-074 P95-A112	N-032 N-043 P95-A112	N-032 N-009 N-043 N-074 P95-A112	N-032 N-074 P95-A112	N-032 N-009 N-043 N-074 P95-A112
Steam	N-032 N-043	N-032	N-009 N-032 N-043		N-032 N-009 N-043
Acids and Bases	N-032 N-074	N-032 N-043 N-074			N-009 N-032 N-043 N-074

CHOOSING Neuflon-ptfe compound ACCORDING WITH FLUID AND SURFACE
	SURFACES
	Steel HEC>=30-45 Temp. Mart. Inox Steel Cast Iron HRB<=200 Steel HRC>=45 Cast Iron HRB>200	Galvanic or chemical surfacing HV>=700 Chromium Bronze	Treated Aluminium	Aust. Inox Steel Glass
FLUIDS	NEUFLON-ptfe compounds (standard in bold)
Hydraulic oil Transmission oil Fire resistant syntetic hydraulic oil	N-031 N-032 N-060 N-077 P95-G114	N-031 N-032 N-060 N-077 P95-G114	N-032 N-074 P95-G114	N-009 N-032 N-074 P95-G114
Water and oil/water emulsions	N-032 N-060 N-077 N-074	N-032 N-060 N-077 N-074	N-032 N-074	N-009 N-032 N-074
Drugs and food	N-102 N-043 N-060 N-074 N-088 P95-G114	N-009 N-074 P95-G114	N-009 N-074 P95-G114	N-009 N-074 P95-G114
Air	N-032 N-031 N-043 N-074 P95-G114	N-032 N-043 P95-G114	N-032 N-074 P95-G114	N-032 N-009 N-043 N-074 P95-G114
Steam	N-032 N-043	N-032		N-032 N-009 N-043
Acids and Bases	N-032 N-074	N-032 N-043 N-074		N-009 N-032 N-043 N-074

ELASTOMER ACCORDING WITH FLUID

FLUIDS	ELASTOMERS
HYDRAULIC OIL - TRANSMISSION OIL	NBR
FIRE RESISTANT SYNTETIC HYDRAULIC OIL	EPDM
WATER AND WATER/OIL EMULSIONS	NBR
FOOD AND DRUG	MVQ
AIR	NBR
STEAM	EPDM - FFKM
ACIDS AND BASES	FKM - FFKM

Rotary shaft seals

Rotary Shaft Seal Rotoslipper

OVERVIEW

assembly

finishes

materials