Lofrans · Windlass

Lofrans Kobra

The Kobra is a horizontal anchor windlass from Lofrans (Italy, since 1966): an anodised aluminium body on deck with the chain gypsy on one side and an independently operated rope drum on the other, a 1000 W DC motor in 12 V or 24 V beside them and a worm gearbox in an oil bath, with manual chain release and manual override. Lofrans’ manual rates it for boats of 35–45 ft in heavy use or 45–50 ft in light use, and older Kobras were also built with a 700 W motor. In Lofrans’ horizontal range the Cayman starts smaller (700 W, also 1000 and 1300 W), while the Tigres (own page) and the 1700–2200 W Falkon are larger; the Kobra shares its gypsies with the Cayman, Royal and Tigres, and maintenance kit 72048 and the main shaft with the Cayman. Its installation and user’s manual also covers the smaller Dorado, whose motors are listed below, and the Razza; unless a row names the Dorado, the numbers on this page are for the Kobra.

Manuals & documents
Wear parts & part numbers
Service intervals
Specifications
Good to know
On the marketplace

Manuals & documents

The links go straight to Lofrans. We host no manuals or drawings — the manufacturer’s copy is the current one.

Installation and user’s manual: Dorado, Kobra, Razza (with Kobra parts list) Operation manual lofrans.com · PDF · EN · IT · FR · DE · ES
Maintenance kit 72048 (Cayman and Kobra): exploded view and contents Parts catalogue lofrans.com · PDF · EN
Kobra product page: specifications, product codes, downloads and the interactive exploded view with spare-part codes Spares list lofrans.com · EN
Oil type and capacities for all Lofrans windlasses Servicing guide lofrans.com · PDF · EN
Lofrans FAQ: oil quantities and the replacement-motor table (flange, shaft, terminals) Servicing guide lofrans.com · EN
Lofrans catalogue: gypsies, maintenance kits, sensors, control boxes and breakers Brochure lofrans.com · PDF · EN
Lofrans circuit breakers: codes and ratings Product page lofrans.com · EN
Lofrans control boxes for DC windlasses: codes by voltage, motor power and terminals Product page lofrans.com · EN
Lofrans spare-parts portal: exploded diagrams for every model, with ordering Manual portal lofrans.com · EN

Wear parts & part numbers

Part	OEM number	Also fits	Note
Service kit	`72048`^1,2,3	—	Lofrans’ maintenance kit for the Cayman and Kobra: shaft seals 25 × 43 × 9 (1) and 25 × 42 × 6 (2), O-rings 117 (2) and 4437 (1), plus keys, circlips, screws, washers and nuts. Use it for step D of the maintenance programme.
Chain gypsy	`630968`^2,3,4	—	6 mm ISO 4565 / DIN 766 (#276A, type a). Kobra gypsies also fit the Cayman, Royal and Tigres; types a–d run with outer cone 631842 and stripper 635271.
Chain gypsy	`630978`^2,3,4	—	7 mm ISO 4565 / 1/4 in G40 (#276B, type b); cut for ISO 4565, not for 7 mm DIN 766.
Chain gypsy	`630994`^2,3,4	—	8 mm ISO 4565 / DIN 766, also 5/16 in BBB (#276C, type c).
Chain gypsy	`631077`^2,3,4	—	5/16 in HT, G40 (#276D, type d).
Chain gypsy	`631011`^2,3,4	—	10 mm ISO 4565 / 3/8 in HT (#276E, type e). Types e–h need outer cone 631846 and stripper 635272.
Chain gypsy	`631118`^2,3,4	—	10 mm DIN 766 (#276F, type f).
Chain gypsy	`631120`^2,3,4	—	3/8 in BBB (#276G, type g).
Chain gypsy	`631122`^2,3,4	—	3/8 in PC, proof coil (#276H, type h).
Motor	`633512` · `633513`^2,5,6,7	—	Current Kobra motors (#961A): 633512 = 12 V (circular flange, 14 mm shaft), 633513 = 24 V, both 1000 W with 2 terminals. Lofrans lists the same motors for the first-generation X2 (before 2010).
Motor	`633523`^5,8,6	—	1000 W 12 V with 3 terminals, B14 size 70 flange and 14 mm shaft (#1244A on the X2). Lofrans’ FAQ also names the Kobra for this motor; compare flange and terminals with yours before ordering.
Motor	`633510`^5,6	—	700 W 12 V, 2 terminals, circular flange, 14 mm shaft: for older 700 W Kobras (Lofrans’ FAQ; also T700, X2 and Airon).
Motor	`633509` · `633520` · `634390` · `633521` · `636050`^5,6,9	—	Dorado only, all 12 V with 2 terminals and an 11 mm shaft (Lofrans’ FAQ): 633509 = 400–500 W and 633520 = 500 W, circular flange; 634390 = 700 W, circular flange; 633521 = 700 W, oval flange; 636050 = 800 W, circular flange. Several are shared with the X1 and Marlin; check flange and power before ordering.
Gear set	`635686`^2,10	—	Worm (#473) of the Kobra gearbox; it runs with the wormwheel 631546.
Gear set	`631546`^2,10	—	Wormwheel (#328), Kobra.
Driveshaft kit	`630737`^2,11	—	Main shaft (#329), shared with the Cayman; sold as a single part, not a kit.
Clutch cone	`631855`^2,10,12	—	Inner cone (#277), shared with the Cayman and Royal; only the outer cone changes with the gypsy size.
Clutch cone	`631842` · `631846`^2,10,12,4	—	Outer cone: 631842 (#318A) for gypsy types a–d (6, 7, 8 mm and 5/16 in), 631846 (#318B) for types e–h (10 mm and 3/8 in). Change it together with the gypsy.
Chain stripper	`635271` · `635272`^2,10,12	—	635271 (#335) for gypsy types a–d, 635272 (#335A) for the 10 mm and 3/8 in gypsies (types e–h).
Emergency handle	`635548` · `633314`^2,11	—	635548 = emergency wheel for the manual override, aluminium (#340); 633314 = handle (#352) for the clutch and the manual override; both shared with the Cayman and Tigres.
Standard pawl	`635339`²	—	Pawl (#470A), on Lofrans’ list as the Leopard pawl; the Cayman uses a different one.
Seal set	`KA08101`^10,12	—	‘Kit A – seals’ for the Cayman 88 and Kobra in the parts lists of 2004/2005; today the seals come in maintenance kit 72048, so ask a dealer whether the KA code is still supplied.
Roller bearing	`631770` · `631764`^2,11	—	631770 = ball bearing 6005 2RS, stainless (#903); 631764 = thrust bearing 51105 (#311); both shared with the Cayman.
Oil filler plug	`635444`^2,11	—	Gearbox filler plug, 3/8 in (TC0 3/8); shared with the Cayman and Falkon.
Circuit breaker	`187333` · `187332`^2,13,10	—	187333 = 100 A thermal-magnetic for 12 V, 187332 = 70 A thermal for 24 V, each with plate and LED, as in Lofrans’ Kobra product table.
Control box / solenoid	—^14,3,2	—	Dual-direction solenoid pack, supplied with the windlass. Lofrans sells replacement boxes by voltage, motor power and number of motor terminals, not by windlass model, so no code is given here: count the terminals on your motor first.
Chain counter sensor	`474048`^15,3	—	Universal chain-counter kit for all Lofrans horizontal windlasses.
Foot switch	`600012` · `600011`^16,2	—	Grey foot switches listed as Kobra accessories: 600012 = UP (black button), 600011 = DOWN (red button); 12–24 V DC, IP67. With white cover: 602119 (UP) and 602120 (DOWN).
Up/down switch	`187338`^17,2	—	Up/down rocker switch type C with housing; the three-position cockpit switch type L (up–off–down) is 404728.
Clutch nut	`635510`^2,11	—	Chromed wing nut (#317) that the handle tightens to engage the gypsy; shared with the Cayman, Royal and Tigres.

Numbers checked against the sources below on 13 October 2026. Always confirm against your serial number and exact type before ordering.

Service intervals

Task	Interval
Grease	Rinse all outer surfaces and hidden spots with fresh water and a soft cloth or non-abrasive sponge to remove the salt, then grease the moving parts, above all the main-shaft threads and the clutch cones, and check for corrosion and mechanical stress: every 3 months if the boat is used more than 6 months a year or chartered, every 6 months for 2–6 months’ use, once a year for under 2 months’ use^10,12
Clutch	When greasing (step B) or changing chain size: unscrew the wing nut anticlockwise with the handle, slide the upper cone, gypsy and lower cone off the shaft, wash them with running water (never a pressure washer), check for corrosion and mechanical damage and grease the threads and all moving parts on reassembly^10,18
Electrical connections	Every 12 months: check the motor terminals and measure the voltage drop at the terminals^10,18
Gaskets	Replace all gaskets (the seals are in maintenance kit 72048): every 24 months with 2–6 or more than 6 months’ use a year, every 12 months on charter boats, every 36 months with under 2 months’ use^10,12,1
Full service	Every 36 months (every 24 months on charter boats): take the windlass off the deck, clean the salt from under the base, check for corrosion and seal it again^10,19

From the maintenance programme (section 6.1) in Lofrans’ installation and user’s manual for the Dorado, Kobra and Razza. Lofrans gives calendar intervals by months of use per year, not operating hours, and the warranty lapses if the programme is not followed. Disconnect the power before any maintenance.

Specifications

Type	Horizontal windlass with chain gypsy and independent rope drum; anodised aluminium body, motor on deck; manual chain release and manual override; automatic free fall optional; for boats of 35–45 ft (heavy use) or 45–50 ft (light use)^2,10
Voltage	12 V or 24 V DC^2,10
Motor	1000 W DC motor, IP56; the current motors 633512 (12 V) and 633513 (24 V) have 2 terminals; worm gearbox in an oil bath. Older Kobras were built with a 700 W motor^2,5
Max pull / working load	12 V: 1250 kg max, working load 170 kg; 24 V: 1325 kg max, working load 170 kg^2,10
Chain speed	12 V: 16 m/min at working load, 32 m/min max; 24 V: 17 / 33 m/min^2,10
Current draw	At working load 150 A (12 V), 80 A (24 V)^2,10
Power cable size	For a total run (positive + negative) of 15–25 m: 35 mm² at 12 V, 25 mm² at 24 V¹⁰
Breaker / fuse	100 A thermal-magnetic breaker 187333 at 12 V, 70 A thermal breaker 187332 at 24 V, each with plate and LED; the manual’s cable table gives the same 100 A / 70 A^2,13,10
Control	Dual-direction control box (solenoid pack) supplied with the windlass; mount it in a dry place near the windlass. Replacement boxes are chosen by voltage, motor power and number of motor terminals^2,10,14
Chain size	Gypsies for 6 mm ISO 4565 / DIN 766, 7 mm ISO 4565 / 1/4 in G40, 8 mm ISO 4565 / DIN 766, 5/16 in HT, 10 mm ISO 4565 / 3/8 in HT, 10 mm DIN 766, 3/8 in BBB and 3/8 in PC^2,3,4
Gear oil	0.5 l of SAE 90 to SAE 140 gear oil (GL1–GL4); delivered filled; filler plug 635444 (3/8 in)^20,5,2
Weight	21 kg^2,10
Versions	Kobra 1000 W in 12 V and 24 V; earlier Kobras with the 700 W motor 633510. The Dorado, the smaller sibling in the same manual, uses 12 V motors of 400 to 800 W according to Lofrans’ motor table^2,5,10
Years built	Current model, in Lofrans’ range in 2026; Lofrans publishes no launch year^2,5
Warranty	3 years limited, provided the maintenance programme is followed; 1 year on motors and electrics, on gaskets and seals and on windlasses used on charter boats^10,18

Good to know

To change chain size, change the gypsy, the outer cone and the chain stripper together: the 6–8 mm and 5/16 in gypsies (types a–d) run with outer cone 631842 and stripper 635271, the 10 mm and 3/8 in gypsies (types e–h) with 631846 and 635272. The gypsies are the same as on the Cayman, Royal and Tigres; Lofrans’ 7 mm gypsy is cut for ISO 4565 chain, not for 7 mm DIN 766.^12,2,4
Before buying a motor, check flange shape, shaft diameter and number of terminals against Lofrans’ FAQ table: the Kobra product page lists the 2-terminal motors 633512/633513, while the FAQ also names the Kobra for the 3-terminal B14 motor 633523 and the older 700 W motor 633510. If the number of terminals changes, the control box has to change too.^5,2
Leave at least 300 mm between the underside of the deck and the top of the heaped chain, and keep the chain’s angle at the bow roller under 90°. A shallow chain locker is the usual cause of frequent jams; the other causes in Lofrans’ troubleshooting table are a gypsy that does not match the chain and chain out of tolerance.^10,12
At anchor, never let the windlass hold the boat: wind, current and waves put very high loads on the chain, so always use a chain stopper. If the windlass blocks, slips or goes into self-protection while hauling, find the cause first; one that turns slowly usually has undersized cables, poor connections, dirty brushes or water in the motor.^10,18
On an aluminium boat, fit a non-conductive gasket (not supplied) between windlass and deck and insulate anchor, chain, chain locker and fixings from the hull as well; otherwise electrolysis will corrode the windlass quickly.^10,12

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Sources

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