Sleipner Galvanic Isolation Kits for Steel/Aluminium Tunnels — Installation Instructions
INSTALLATION MANUAL
Galvanic isolation of Sleipner Side-Power thrusters in steel and aluminium tunnels: what each thruster range needs, the isolation kit parts per tunnel size, how to fit them, and the isolation plate for Ø385 mm hydraulic tunnel thrusters.
DocumentSleipner Galvanic Isolation Kits for Steel/Aluminium Tunnels Installation Instructions
FormatPDF · 10 pages · 3.2 MB
LanguageEnglish
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What Each Range Needs
| Range / tunnel | Guidance |
|---|---|
| SE25 – SE60 / Ø110mm – Ø185mm | Composite brackets and composite flex coupler act as insulators: no risk of B+ connection to an aluminium hull, no extra bracket gasket needed. Stainless gearleg bolts must be insulated from the aluminium tunnel with a sleeve or equal. (SE25 and SE50 already galvanically isolated; SE30-40-60 isolated during 2017.) |
| SE80 – SE/SH300 / Ø185mm – Ø300mm | Insulated aluminium bracket, pre-filled with oil. Coat the aluminium tunnel with epoxy primer, insulate stainless gearleg bolts with sleeves, and fit an extra gasket between bracket and tunnel – aluminium brackets carry a risk of B+ connection to the hull. |
| SH350 – SH1400 / Ø300mm – Ø610mm | Gearlegs with gear oil change. Epoxy primer on the aluminium tunnel, insulated gearleg bolts, and an extra bracket gasket (standard on some models). |
Installing an Isolation Kit
- Use the standard drilling template or gasket to mark the hole centres on the tunnel.
- Drill the holes to the measurements on the relevant isolation kit drawing in the PDF (each drawing includes a drilling template; diameters must be adjusted at the tunnel).
- Place the isolator parts and fasten gearleg and bracket per the thruster installation manual.
- IMPORTANT: where a kit includes a gasket, always place it between the tunnel and the motor bracket.
Isolation Kit Parts
| Stock no. | Part | Kit drawing – tunnel / thrusters | |
|---|---|---|---|
| SM-128352 | Galvanic protection for bolts M6 (acetal resin, white) | SM-128355 – Ø110 tunnel, SE25 | Ask us to source it → |
| SM-128351 | Galvanic protection for gearhouse (Ø110-125 tunnel) | SM-128355 / SM-128365 – Ø110 SE25, Ø125 SE30/40 | Ask us to source it → |
| SM-128262 h3 | Galvanic protection for bolts M8, 3mm | SM-128365 – Ø125, SE30/40; SM-129224 – Ø185, SE50/60 | Ask us to source it → |
| SM-129223 | Galvanic protection for gearhouse (Ø185 tunnel) | SM-129224 – Ø185, SE50/60 | Ask us to source it → |
| SM-128261 | Galvanic protection/gearhouse (Ø185 tunnel) | SM-128263 – Ø185, SE80/100 | Ask us to source it → |
| SM-128262 h5 | Galvanic protection for bolts M8, 5mm | SM-128263 – Ø185, SE80/100 | Ask us to source it → |
| SM-127908 | Gasket for galvanic insulation for bracket (INCA) | SM-128263 – Ø185, SE80/100 | Ask us to source it → |
| SM-128266 | Galvanic protection Ø215-250 tunnel | SM-128269 – Ø215-250, SE120-130-150-170-210 | Ask us to source it → |
| SM-127901 | Gasket for galvanic insulation for bracket (INCA) | SM-128269 – Ø215-250 | Ask us to source it → |
| SM-128268 h7 | Galvanic protection/bolts M10 | SM-128269 – Ø215-250 | Ask us to source it → |
| SM-128392 | Galvanic protection in steel/alu hulls Ø300 tunnel | SM-128396 – Ø300, SE240-285 (SH300/350) | Ask us to source it → |
| SM-127816 | Gasket for galvanic insulation for bracket (INCA) | SM-128396 – Ø300 | Ask us to source it → |
| SM-128268 h9 | Galvanic protection/bolts M10 | SM-128396 – Ø300 | Ask us to source it → |
| SM-128474 | Galvanic protection for gearhouse (Ø386 tunnel) | SM-128476 – Ø386, SH420/550 | Ask us to source it → |
| SM-128426 h11 | Galvanic protection/bolt M16 | SM-128476 – Ø386 | Ask us to source it → |
| SM-127834 | Gasket for galvanic insulation for bracket (INCA) | SM-128476 – Ø386 | Ask us to source it → |
| SM-128425 | Galvanic protection/gearhouse SH700 | SM-128427 – Ø411,5 tunnel | Ask us to source it → |
| SM-128426 h15 | Galvanic protection/bolt M16 | SM-128427 – Ø411,5 | Ask us to source it → |
| SM-127835 | Gasket for galvanic insulation for bracket (INCA) | SM-128427 – Ø411,5 | Ask us to source it → |
| SM-128292 h15 | Galvanic protection/gearhouse SH1000/1400, h15mm | SM-128300 – Ø513, SH1000 | Ask us to source it → |
| SM-128292 h19 | Galvanic protection/gearhouse SH1000/1400, h19mm | SM-128429 – Ø610, SH1400 | Ask us to source it → |
| SM-128293 | Galvanic protection/bolts M12 (15mm for SH1000, 19mm for SH1400) | SM-128300 / SM-128429 | Ask us to source it → |
Part numbers as printed on the 2018 tech info drawings.
Galvanic Isolation Plate – Ø385 mm Tunnel Thrusters
- Clean the bracket and motor surfaces; turn off all electrical/hydraulic power first.
- Fit the isolation plate kit in the order shown: galvanic isolation plate on the bracket, bushings, washers, bolts and nuts (bolts with Veidec Multi Lock 143 or similar medium thread locker). Align the holding keys and grease the shafts with seawater resistant grease before fitting the flexible coupling.
- Set both spline gear shafts at the same distance (X = Y) and tighten both set screws.
- Place the motor on the bracket, engaging the couplings top and bottom (any orientation, but keep the hose terminals accessible), and fasten to 33 Nm (24 lb/ft).
- Check the drive shafts engage by turning the propeller by hand (it can be stiff through the gear reduction, but must turn).
Keep the hydraulic motor covered so dust cannot enter the hose ports. If the sleeves are too tight, the holes in the hydraulic motor must be drilled up to Ø14mm (seen on BA60 and BA40 motors).
Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.
Products in this Manual
