OVC

OVC FRANCEJOINT | Alldatasheet

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 4

Technical content

QUALITY & EXPERTISE FOR YOUR SEALING NEEDS || SEAL DESIGN Tolerance for the inside diameter of the seal (Ød) Shaft diameter Ød1 (mm) Apparent metal cage Rubber coating Coating with grooves Roundness tolerance Shaft diameter Ød1 (mm) Apparent metal cage Rubber coating Ød1 ≤ 50.0 0.18 0.25 50.0 < Ød1 ≤ 80.0 0.25 0.35 80.0 < Ød1 ≤ 120.0 0.30 0.50 120.0 < Ød1 ≤ 180.0 0.40 0.65 180.0 < Ød1 ≤ 300.0 0.25% of the inside diameter 0.80 300.0 < Ød1 ≤ 500.0 0.25% of the inside diameter 1.00 Tolerance for the outside diameter of the seal (ØD) Free and without constraint, the outside diameter of the sealing lip is always bigger than the diameter of the rotating hub. The pre-tightening or interference denotes the difference between these two values. Depending on the hub diameter, the diameter of the sealing lip is generally considered to be greater, between 0.8 and 3.5 mm. |DESCRIPTION The OVC profile is an inverted shaft seal composed of a single metal cage with a rubber coating and a primary sealing lip without spring. |ADVANTAGES Very good static sealing Very good thermal expansion compensation Greater roughness is allowed in the housing Reduced risk of corrosion Sealing for high viscosity fluids Primary sealing lip generating low levels of friction and heat |APPLICATIONS Rotating hubs Fixed shafts |MATERIALS Rubber ACM 70 - 75 Shore A EPDM 70 - 75 Shore A FKM 70 - 75 Shore A HNBR 70 - 75 Shore A NBR 70 - 75 Shore A Metal cage Steel - AISI 1010 INVERTED SHAFT SEALS OVC ROTARY SEALS | INVERTED SHAFT SEALS | OVC

www.francejoint.com Temperature / Media Media Maximum temperature depending on the materials ACM AEM EPDM FKM HNBR NBR VMQ Mineral oils Oils for motors +130°C +130°C – +170°C +130°C +100°C +150°C Oils for gearboxes +120°C +130°C – +150°C +110°C +80°C +130°C Oils for hypoid gears +120°C +130°C – +150°C +110°C +80°C – ATF oils +120°C +130°C – +170°C +130°C +100°C – Hydraulic oils +120°C +130°C – +150°C +130°C +90°C – Greases – +130°C – – +100°C +90°C – Fire-resistant fluids HFA group - Emulsion with more than 80% water – – – – +70°C +70°C +60°C HFB group - Opposite solution (water in oil) – – – – +70°C +70°C +60°C HFC group - Polymer aqueous solution – – +60°C – +70°C +70°C – HFD group - Water-free synthetic fluids – – – +150°C – – – Other fluids EL + L heating oil – – – – +100°C +90°C – Water for washing – – +130°C +100°C +100°C +90°C – Temperature range || TECHNICAL DATA Speed Rotation hub diameter (mm) 40 80 120 160 200 2400 500 1000 1500 2000 2500 3000 3500 4000 Speed (r.p.m) Linear speed calculation: s (m/s) = [rotating hub Ø (mm) x speed (rpm) x π] 60,000 Pressure Inverted shaft seals with a primary sealing lip and no spring are used only in pressurised environments. We recommend using inverted shaft seals with springs for use in pressurised environments between 0.02 and 0.05 MPa (max). ROTARY SEALS | INVERTED SHAFT SEALS | OVC

www.francejoint.com Surface roughness Ra 1.6 to 6.3 µm Rz 10.0 to 25.0 µm Rmax ≤25.0 µm Fixed shaft tolerance Shaft diameter Ød1 (mm) Tolerance h8 (mm) 10.0 < Ød1 ≤ 18.0 -0.027 / 0 18.0 < Ød1 ≤ 30.0 -0.033 / 0 30.0 < Ød1 ≤ 50.0 -0.039 / 0 50.0 < Ød1 ≤ 80.0 -0.046 / 0 80.0 < Ød1 ≤ 120.0 -0.054 / 0 120.0 < Ød1 ≤ 180.0 -0.063 / 0 180.0 < Ød1 ≤ 250.0 -0.072 / 0 250.0 < Ød1 ≤ 315.0 -0.081 / 0 315.0 < Ød1 ≤ 400.0 -0.089 / 0 400.0 < Ød1 ≤ 500.0 -0.097 / 0 Fixed shaft radius and width Height H1 (mm) Width Radius R2 max (mm)L2min (H1 x 0.85) L1min (H1 x +0.3) 7.00 5.95 7.30 0.508.00 6.80 8.30 10.00 8.50 10.30 12.00 10.30 12.30 0.7015.00 12.75 15.30 20.00 17.00 20.30 || FIXED SHAFT DESIGN ØD3 Ød1 h8 20°/30°ØD1 H11 R2 max 10°/20° R ROTARY SEALS | INVERTED SHAFT SEALS | OVC

ØD3 Ød1 h8 20°/30°ØD1 H11 R2 max 10°/20° R || ROTATING HUB DESIGN Rotating hub hardness Rotation speed Hardness in HRC s ≤ 4.0 m/sec 45 HRC 4.0 < s ≤ 10.0 m/s 55 HRC s > 10.0 m/sec 60 HRC Surface roughness Ra * 0.2 to 0.8 µm Rz 1.0 to 4.0 µm Rmax ≤6.3 µm *Ra = 0.1 µm for demanding applications Rotating hub tolerance Rotating hub diameter ØD1 (mm) Tolerance H11 (mm) 10.0 < ØD1 ≤ 18.0 0 / +0.110 18.0 < ØD1 ≤ 30.0 0 / +0.130 30.0 < ØD1 ≤ 50.0 0 / +0.160 50.0 < ØD1 ≤ 80.0 0 / +0.190 80.0 < ØD1 ≤ 120.0 0 / +0.220 120.0 < ØD1 ≤ 180.0 0 / +0.250 180.0 < ØD1 ≤ 250.0 0 / +0.290 250.0 < ØD1 ≤ 315.0 0 / +0.320 315.0 < ØD1 ≤ 400.0 0 / +0.360 400.0 < ØD1 ≤ 500.0 0 / +0.400 Chamfer and radius Rotating hub diameter ØD1 (mm) Chamfer diameter ØD3 (mm) Radius R (mm) ØD1 ≤ 10.0 ØD1 + 1.50 2.00 10.0 < ØD1 ≤ 20.0 ØD1 + 2.00 2.00 20.0 < ØD1 ≤ 30.0 ØD1 + 2.50 3.00 30.0 < ØD1 ≤ 40.0 ØD1 + 3.00 3.00 40.0 < ØD1 ≤ 50.0 ØD1 + 3.50 4.00 50.0 < ØD1 ≤ 70.0 ØD1 + 4.00 4.00 70.0 < ØD1 ≤ 95.0 ØD1 + 4.50 5.00 95.0 < ØD1 ≤ 130.0 ØD1 + 5.50 6.00 130.0 < ØD1 ≤ 240.0 ØD1 + 7.00 8.00 240.0 < ØD1 ≤ 500.0 ØD1 + 11.00 12.00 Rotating hub run out and eccentricity 3000 r.p.m 2000 r.p.m 1000 r.p.m 500 r.p.m 0 50 100 150 200 0,1 0,2 0,3 0,4 Hub diameter (mm) Hub run-out + eccentricity (mm) ROTARY SEALS | INVERTED SHAFT SEALS | OVC FRANCE JOINT SAS Zone Artisanale Le Mortier - B.P . 50009 - Cugand - 85613 Montaigu Cedex - France Ph. +33 (0)2 51 42 13 76 - Fax +33 (0)2 51 43 61 14 - Email: contact@francejoint.fr - Website: www.francejoint.com