MOCAL Oil Cooling Diaphragm Pump
- 2 UK gals/10 liters per minute with 7 amps current draw.
- Temperature constant use up to 130°C, intermittent up to 150°C.
- The pump has an integrated cooling fan, 12 or 24volt motor.
- Ports are 3/8NPTF and may be rotated in 90° increments to simplify plumbing.
NOTE: The pump body is made of lightweight nylon, care must be taken when tightening tapered adapters not to over tighten and crack the housing.
- electric pump
- AN8 fittings (Requires AN8 hose)
The most popular oil to air coolers is the pressed plate range, which was first made in the late ’50s.
These coolers, built to our specification since 1965 must rate as the single most commonly used component on racing cars worldwide.
The cooler consists of aluminum pressed plates of varying number forming oil ways and end tanks, the oil ways contain ‘turbulators’.
These do not only break down boundary layer effects in the flow to obtain maximum heat dissipation without undue pressure drop but also, because they are brazed to both surfaces of the plates, hold them together under pressure. The oil ways are interspersed with aluminum strip louvered and formed into corrugations to provide airways.
The design is beautifully simple and efficient and most suitable for mass production, but it is restricted to a 2″ thickness and a limited amount of lengths. The secret of the success of the Mocal cooler is our insistence on the highest standards of build quality allied to a rigorous inspection system. In particular, the attention paid to the accuracy of the pressing tools to ensure the closest contact of the plates during the “Nocoloc” brazing process ensures our superiority over look-a-likes from the Far East.
Maximum working pressure on the standard range of coolers is 10 bar (150psi) although each cooler is tested to 11.5 bar (170psi) this is adequate for all but the most arduous motoring applications, however, some customers prefer a higher pressure rating, for instance where the pressure bypass valve does not provide enough protection as in high rpm in cold start-up conditions or on dry sump installations.
Electric Oil Pumps
Mocal oil coolers are used for cooling gearboxes, crown wheel and pinion units, differentials and power steering pumps, here the primary problem is not so much concerned with avoiding bearing metal to metal contact, as in engine cooling, but in preventing loss of tolerances due to heat expansion of metals which in turn lead to greater friction resulting in a runaway spiral of heat build-up.
Some gearboxes and all power steering pumps have an oil pressure system that can be tapped for oil flow otherwise a remote pump is required. When designing an installation these pumps require a switch, either heat actuated or manual, pumping cold oil is not recommended. Add extra oil to fill cooler, pump, and pipes which must be at or below the normal oil level otherwise the oil level in the gear housing will be too high when the pump is switched off. When returning oil onto the gears do so after the point of contact to avoid pumping losses caused by cool oil.
If you experience difficulty is experienced in supplying ram air to an oil to air cooler we can supply a fan and housing. Use -6 (3/8″ bore) hose.