Lofrans X1 / X2 / X3 – Windlass
Photo: Matti Blume, CC BY-SA 4.0, via Wikimedia Commons (cropped)

Lofrans · Windlass

Lofrans X1 / X2 / X3

The X1, X2 and X3 are Lofrans’ vertical windlasses: only the gypsy, with or without a warping drum, sits on deck, while the motor and the worm gearbox in its oil bath hang below. Lofrans’ heavy-duty rating puts the X1 (500–1000 W, 12 V) on boats of about 20 to 40 ft and the X3 (1500–1700 W) on 40 to 60 ft, with the X2 (800–1500 W) in between; all three come with chrome-plated bronze or aluminium (ALU) deck parts, the X1 and X2 also as Dark Version. Lofrans (Italy, since 1966) names the X1 as successor of the Marlin, the X2 of the Progress 1 and Project 1000, and the X3 of the Progress 2 and Project 1500; the Project 1000 and 1500 still share gypsies, clutch cones, maintenance kits and manuals with the X2 and X3. Over the years X windlasses have been fitted with motors with circular, oval, square, triangular and B14 flanges, so identify yours before ordering.

Manuals & documents

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

Wear parts & part numbers

PartOEM numberAlso fitsNote
Service kit720371,2,3,4—X1 and X1 ALU. Lofrans’ kit sheet lists shaft seals 35-45-7, 40x55x7 (2), 25-43-9, 30x42x7, 20x42x7 and 18-30-7, O-rings 2325, 3287, 4375, 3250, 2250, 2287 and 2375, plus circlips, keys and screws.
Service kit720385,6,4—X2 with chrome-bronze deck parts and the retired Project 1000. Seals 25-47-7, 40-55-7 (2), 25-43-8, 30x42x7 (2) and 20x42x7, O-rings 2325, 3287, 4375, 2250, 2287 and 2375, plus circlips, keys and screws.
Service kit720397,6,4—X2 ALU only. Seals 35-45-5, 25-47-7, 30x42x7 (2) and 20x42x7, O-rings 2325, 2250, 2287 and 2375, plus circlips, keys and screws.
Service kit720408,9,4—X3, X3 ALU and the retired Project 1500. Seals 35x45x7, 40x55x7 (2), 25x43x9, 30x55x10, 45x60x7 (2), 25x45x10 and 30x50x7, O-rings 2325, 4500, 3287, 4375, 2287 and 2375, plus circlips, keys and screws.
Chain gypsy6309703,4,10—X1, X1 ALU and X1 Dark Version: 6 mm ISO 4565 / DIN 766 (#206B); with the finger it also takes 10–12 mm 3-strand rope.
Chain gypsy6309803,4,10—X1, X1 ALU and X1 Dark Version: 7 mm ISO 4565 / 1/4 in G40 (#206C).
Chain gypsy6309993,4,10—X1, X1 ALU and X1 Dark Version: 8 mm ISO 4565 / DIN 766 (#206D); with the finger it also takes 12 mm 3-strand rope.
Chain gypsy6309536,4,10—X2, X2 ALU and Project 1000: 6 mm ISO 4565 / DIN 766 (#916A).
Chain gypsy6309496,4,10—X2, X2 ALU and Project 1000: 8 mm ISO 4565 / DIN 766 (#916B); with the finger it also takes 14 mm 3-strand rope.
Chain gypsy6309516,4,10—X2, X2 ALU and Project 1000: 10 mm ISO 4565 (#916C).
Chain gypsy6309556,4,10—X2, X2 ALU and Project 1000: 10 mm DIN 766 (#916D).
Chain gypsy6309579,4,10—X3, X3 ALU and Project 1500: 8 mm ISO 4565 / DIN 766 (#989A); with the finger, 14 mm 3-strand rope.
Chain gypsy6309599,4,10—X3, X3 ALU and Project 1500: 10 mm ISO 4565 (#989B); with the finger, 16 mm rope.
Chain gypsy6309669,4,10—X3, X3 ALU and Project 1500: 10 mm DIN 766 (#989C); with the finger, 16 mm rope.
Chain gypsy6309619,4,10—X3, X3 ALU and Project 1500: 12 mm ISO 4565 / 13 mm DIN 766 (#989D); with the finger, 18 mm rope.
Motor63352011,12—X1 500 W, 12 V: 2 terminals, circular flange, 11 mm shaft (Lofrans’ FAQ); Jimmy Green lists it as the ‘X1 2011’ motor.
Motor6343903,11,12—X1 700 W, 12 V, as shown on the X1 exploded view: 2 terminals, circular flange, 11 mm shaft.
Motor63352111,12—X1 and X2 700 W, 12 V, oval flange: 2 terminals, 11 mm shaft (Lofrans’ FAQ); Jimmy Green calls it the ‘X1-X2 2011’ motor.
Motor63605011,12—X1 800 W and X2 800 W, 12 V: 2 terminals, circular flange, 11 mm shaft (Lofrans’ FAQ); the ‘X1-X2 2016’ motor at Jimmy Green.
Motor63350911,12—First-generation X1, 400–500 W, 12 V: 2 terminals, circular flange, 11 mm shaft (Lofrans’ FAQ).
Motor633523 · 6335246,11,12,13—1000 W with B14 size 70 flange, 3 terminals, 14 mm shaft: 633523 = 12 V (X2, #1244A; Lofrans’ FAQ also lists the X1 1000 W), 633524 = 24 V (X2, #1244B).
Motor633525 · 6335266,11,12,13—X2 and X3 1500 W with B14 size 70 flange, 3 terminals, 14 mm shaft: 633525 = 12 V (#1250A), 633526 = 24 V (#1250B).
Motor634369 · 6343709,11,12,13—X3 1500 W with triangular flange (listed on the X3 exploded view; the Tigres motor): 634369 = 12 V, 634370 = 24 V, 3 terminals, 17 mm shaft.
Motor634371 · 63437214,9,11,12,13—X3 1700 W with triangular flange, first-generation X3 per Lofrans’ FAQ (the Falkon motor, also on the X3 exploded view): 634371 = 12 V, 634372 = 24 V, 17 mm shaft.
Motor633507 · 63350811,12,13—X3 1700 W with B14 size 80 flange, 19 mm shaft (Lofrans’ FAQ): 633507 = 12 V, 633508 = 24 V. Goes with the B14 gearbox 631989.
Motor6335159,12—X3 1700 W, 12 V: listed on the X3 exploded view as ‘1700W 12V-4M M.W.’; Jimmy Green sells it for the X3 ALU 1700 W. Compare flange and terminals with your old motor.
Motor633510 · 63351111,12—First-generation X2 700 W, circular flange, 2 terminals, 14 mm shaft (Lofrans’ FAQ): 633510 = 12 V, 633511 = 24 V.
Motor633512 · 63351315,11,12,13—First-generation X2 1000 W (Jimmy Green: before 2010), circular flange, 2 terminals, 14 mm shaft: 633512 = 12 V, 633513 = 24 V; the same motor as the Kobra.
Motor634373 · 63437411—First-generation X2 1000 W with square flange and 3 terminals (Lofrans’ FAQ): 634373 = 12 V, 634374 = 24 V.
Motor634387 · 63437811,12—Project 1000, 1000 W with square flange and 3 terminals (Lofrans’ FAQ): 634387 = 12 V (also first-generation X2), 634378 = 24 V.
Clutch cone631829 · 6318283,16—X1: 631829 = outer cone (#1048), 631828 = inner cone (#1049).
Clutch cone6318416,17—X2 and Project 1000 (#915), two per windlass.
Clutch cone6318269,18—X3 and Project 1500 (#988), two per windlass.
Emergency handle11857 · 729073,6,9,16—X1, X2 and X3 (on all three exploded views): 11857 = 20 cm lock-in handle, anodised aluminium, black; 72907 = 25 cm floating handle. The handle loosens and tightens the clutch nut and works the manual override where there is one.
Chain stripper6352743—X1 (#1044); support 198007 (#1043).
Chain stripper6352676—X2 and Project 1000 (#910, new design); support 635378 (#911).
Chain stripper6352709—X3 (#982); support 198005 (#981).
Chain counter sensor47405319,3,6,9,4—Kit S for the X1, X2 and X3: sensor for the base and magnet for the gypsy, to connect a chain counter. The magnet comes fitted on current units.
Gear set635677 · 6356786—X2 worms: 635677 = worm A1, module 1.25, Z 55 (#1308a); 635678 = worm A2, module 1.75 (#1308b). Match the one in your gearbox; the X2 wormwheel is 631525.
Gear set6315256,17—Wormwheel, X2 (#926).
Gear set6356909—Worm, X3 (#545).
Gear set6315449—Wormwheel, X3 (#543).
Driveshaft kit630679 · 6306803,16—Main shaft X1, sold as a single part: 630679 = with drum (#1051A), 630680 = low profile without drum (#1045A).
Driveshaft kit630661 · 6306626,17—Main shaft X2, sold as a single part: 630661 = standard with drum (#917A), 630662 = low profile (#919A).
Roller bearing63176420,15,6—Thrust bearing 51105 (#311) in the X2; the same part sits in the Cayman and Kobra.
Oil filler plug6354429—X3 gearbox, 1/4 in (TC0 1/4); the same plug as on the Tigres.
Seal setKA3210118—Project 1500: ‘Kit A – seals’ from Lofrans’ 2006 parts list in the X3 manual for units built before 2014. The current route is maintenance kit 72040.
Circuit breaker187331 · 187332 · 187333 · 18733421,3,20,15,14,6,9—Per Lofrans’ product tables: 187331 = 35 A thermal for the X1 500 W; 187332 = 70 A thermal for X1 800 W, X2 800 W, the 24 V X2 and the 24 V X3; 187333 = 100 A thermal-magnetic for X1 1000 W, most 12 V X2 1000/1500 W and X3 1500 W 12 V; 187334 = 125 A thermal-magnetic for X3 1700 W 12 V. Each comes with plate and LED; a few table rows differ, so check your model code.
Control box / solenoid600018 · 600019 · 60002022,4—For 3-terminal motors (the B14 motors of the X1 1000 W, X2 and X3, the X3’s triangular-flange motors, the square-flange motors of the first-generation X2 and the Project 1000): 600018 = 12 V, 500–1700 W; 600019 = 24 V, 500–1700 W; 600020 = 24 V, 1700–2300 W. Lofrans picks control boxes by voltage, motor power and terminals, not by windlass model.
Control box / solenoid602590 · 600021 · 60002222,4—4-terminal boxes, which also run 2-terminal motors (X1 500/700/800 W, X2 700/800 W, the circular-flange motors of the first-generation X2): 602590 = 12 V, 500–700 W (500–1000 W in the catalogue); 600021 = 12 V, 1000–1700 W; 600022 = 24 V, 500–1700 W.
Foot switch600011 · 60001223,20,15,14,3,6,9,24—Listed as an accessory for the X1, X2 and X3: 600011 = grey, red button (down), 600012 = grey, black button (up); 12–24 V DC, IP67, 5 A contacts. White covers: 602120 (down), 602119 (up); stainless: 636074 (red), 636075 (black).
Up/down switch187338 · 40472825,20,3—Accessories on the X pages: 187338 = rocker switch type C with housing (up/down); 404728 = cockpit switch type L (up-off-down).
Gearbox gasket6332473,16—X1 and X1 ALU (#1054). Lofrans’ maintenance programme replaces all gaskets every 12 to 36 months, depending on use.
Gearbox gasket6332456,17—X2 and Project 1000 (#967).
Gearbox gasket6332469—X3 (#992).
Clutch nut635471 · 6354753—X1, chromed: 635471 (#1053) and a second version 635475 (#2004); compare with the exploded view.
Clutch nut6355166,9,17—X2, X3, Project 1000 and Project 1500 (#912, chromed).
Clutch nut6354906,9—X2 and X3 (#956, chromed), the second version on Lofrans’ list; compare with the exploded view.
Finger kit (rope/chain)474023 · 60104726,3,6,4—Kit F for the X1, X2 and Project 1000: 474023 = nylon finger, 601047 = stainless finger (listed for the X2; Lofrans’ catalogue says X1 and X2). Only for a rope-to-chain rode.
Finger kit (rope/chain)474017 · 60210526,9,4—Kit F for the X3: 474017 = nylon finger (also Project 1500), 602105 = stainless finger. Only for a rope-to-chain rode.
Gearbox (without motor)6348183—X1 (#228).
Gearbox (without motor)631989 · 6319919—X3: 631989 = for the 1700 W motor with B14 flange; 631991 = for the triangular-flange motor, with manual override. The gearbox has to match the motor flange.

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

Service intervals

TaskInterval
Fresh-water washStep A – rinse all outer surfaces and hidden spots with fresh water and remove the salt: every 3 months if the boat is used more than 6 months a year or chartered, every 6 months with 2–6 months’ use, once a year with under 2 months. Dark Version: rinse weekly and cover it waterproof for winter storage16,17,27
GreaseStep B – grease the rotating parts, above all the main-shaft threads and the clutch cones, and check for corrosion and mechanical stress: same rhythm as step A16,17,27
Electrical connectionsStep C – check the motor terminals and measure the voltage drop at them: every 12 months, whatever the use16,17,27
GasketsStep D – replace all gaskets (the maintenance kit for your model): every 12 months on charter boats, every 24 months with 2–6 or more than 6 months’ use a year, every 36 months with under 2 months16,17,27,1,5,7,8
Full serviceStep E – take the windlass off the deck, clean the salt from under the base and re-seal it: every 24 months on charter boats, every 36 months otherwise16,17,27
ClutchGypsy and cones, at each greasing or when changing chain size: on the X1 remove the hood and chain pusher first; unscrew the gypsy hand-wheel anticlockwise with the handle, slide off upper cone, gypsy and lower cone, wash with running water (never a pressure washer), check for corrosion and damage, grease threads and moving parts on reassembly16

From the maintenance programme (section 6) in Lofrans’ installation and user’s manuals for the X1, the X2/Project 1000 and the X3/Project 1500, which share the same table. Lofrans staggers it by months of use per year, not by operating hours, and the warranty lapses if it is not followed. The X programme has no separate oil-change step; oil type and quantity are in the specifications. Disconnect the power before any maintenance.

Specifications

TypeVertical windlass: gypsy on deck (with warping drum or as a low profile), motor and anodised aluminium worm gearbox below deck; deck parts in chrome-plated bronze (CRO) or anodised aluminium (ALU), the X1 and X2 also as Dark Version. Chain-counter magnet fitted as standard; manual override on the chrome-bronze X2 and X3 only (not on the 800 W chrome X2), none on the X13,6,9,11
ModelsX1: 500, 800 or 1000 W · X2: 800, 1000 or 1500 W · X3: 1500 or 1700 W; each with drum or low profile, CRO or ALU. Retired, sharing gypsies, cones, kits and manuals: Project 1000 (1000 W, now X2) and Project 1500 (1500 W, now X3)11,3,6,9,17,18
VoltageX1: 12 V only · X2: 12 V (800 W) or 12/24 V (1000 and 1500 W) · X3: 12 or 24 V · Project 1000 and 1500: 12 or 24 V3,6,9,17,18
MotorDC motor with 2 or 3 terminals under an IP67 cover (on the X3 up to 1500 W); motor generations differ in flange (circular, oval, square, triangular, B14) and shaft, see the parts list. The Project 1000 motor has a built-in solenoid (2012 parts list)3,6,9,11,17
Max pull / working loadX1 630 / 95 kg (500 W), 700 / 100 kg (800 W), 900 / 125 kg (1000 W) · X2 850 / 115 kg (800 W), 1000 / 150 kg (1000 W, 12 V), 1060 / 160 kg (1000 W, 24 V), 1200 / 165 kg (1500 W, 12 V), 1270 / 175 kg (1500 W, 24 V) · X3 1200 / 165 kg (1500 W), 1600 kg at 12 V or 1695 kg at 24 V / 200–215 kg (1700 W)3,6,9
Current drawAt working load: X1 60 A (500 W), 110 A (800 W), 125 A (1000 W) · X2 110 A (800 W), 117 / 59 A (1000 W, 12 / 24 V), 130 / 65 A (1500 W, 12 / 24 V) · X3 150 / 65 A (1500 W, 12 / 24 V), 180 / 90 A (1700 W, 12 / 24 V)3,6,9
Chain speedAt working load: X1 23 m/min (500 W), 25 m/min (800 W), 18 m/min (1000 W) · X2 26 m/min (800 W), 20 / 23 m/min (1000 W, 12 / 24 V), 17 / 19 m/min (1500 W, 12 / 24 V) · X3 17 m/min (1500 W), 14–15 m/min (1700 W)3,6,9
Chain sizeX1: 6 mm ISO 4565/DIN 766, 7 mm ISO 4565 / 1/4 in G40, 8 mm ISO 4565/DIN 766 · X2 and Project 1000: 6 and 8 mm ISO 4565/DIN 766, 10 mm ISO 4565, 10 mm DIN 766 · X3 and Project 1500: 8 mm ISO 4565/DIN 766, 10 mm ISO 4565, 10 mm DIN 766, 12 mm ISO 4565 / 13 mm DIN 7663,6,9,4,10
Rope size3-strand rope on a rope-to-chain rode, with the finger fitted: X1 10–12 mm (6 mm gypsy) or 12 mm (8 mm gypsy) · X2 14 mm (8 mm gypsy) · X3 14 mm (8 mm gypsy), 16 mm (10 mm) or 18 mm (12 mm)3,6,9,16
WeightX1 10–17 kg · X2 18–25 kg · X3 32–38 kg, depending on motor, drum and material3,6,9
Gear oilGear oil SAE 90 to SAE 140 (GL1–GL4), as for every Lofrans windlass11,28
Gear oil capacityX1 500/800 W 0.15 l, X1 1000 W 0.30 l · X2 700 W 0.15 l, X2 1000/1500 W and Project 1000 0.30 l · X3 (1500 and 1700 W) and Project 1500 0.30 l28,11
Power cable sizeBy total cable length (positive + negative), up to 15 m / 15–25 m: X1 500 W 16 / 25 mm², 800 W 16 / 35 mm², 1000 W 25 / 50 mm² · X2 and Project 1000: 700 W 16 / 25 mm² at 12 V or 10 / 16 mm² at 24 V; 1000 and 1500 W 25 / 35 mm² at 12 V or 16 / 25 mm² at 24 V · X3 and Project 1500 (1500 and 1700 W): 35 / 50 mm² at 12 V or 25 / 35 mm² at 24 V16,17,27
Breaker / fuseLofrans breaker matched to the model: 35 A (X1 500 W), 70 A (X1 and X2 800 W, the 24 V X2 and X3), 100 A (X1 1000 W, most 12 V X2, X3 1500 W 12 V), 125 A (X3 1700 W 12 V); codes in the parts list. Lofrans’ breakers have a trip curve, not just a rated current21,3,6,9,16
ControlDual-direction solenoid pack (control box) supplied; mount it dry near the windlass, and the up/down panel where the operator can see the windlass. Replacement boxes go by voltage, motor power and number of motor terminals16,3,6,9,22
MountingStandard studs for a deck thickness of 18–30 mm on the X1 (minimum 10 mm on request), 25–40 mm on the X2 and Project 1000, 50–70 mm on the X3 and Project 1500; other thicknesses on request. Bed the base on the supplied gasket with silicone, not permanent glue; on aluminium boats an insulating gasket (not supplied) goes under the base16,17,27
Years builtX1, X2 and X3 are in Lofrans’ range in 2026; Lofrans publishes no launch years. Jimmy Green dates the first-generation X2 motor before 2010, the X3 has separate manuals for units built before and after 2014, and the Project 1500 parts list is dated 2006, the Project 1000 list 201211,12,9,18,17
Warranty3 years limited, on condition that the maintenance programme is kept; motors and electrics, gaskets and seals, and windlasses on charter boats 1 year. A finger broken in chain-only use is not covered16

Good to know

  • The finger (Kit F) is only needed when the rode is rope and chain. With an all-chain rode take it off: Lofrans says it breaks otherwise, and a finger broken in chain-only use is not covered by the warranty.16
  • An oil trace between motor and gearbox usually means the motor coupling has worked loose: the worm then turns off-centre and the gasket starts to leak. Find out why the bolts came loose, check the motor shaft and the worm bore for ovality and whether oil has reached the motor, and renew the gaskets. The gearbox holds only 0.15–0.30 l of SAE 90–140 gear oil, so even a small loss counts.16,28
  • Before ordering a motor, compare yours with the motor table in Lofrans’ FAQ: flange (circular, oval, square, triangular or B14), shaft diameter (11, 14, 17 or 19 mm on the X series) and number of terminals. On the X3 the gearbox also depends on the flange (631989 for B14, 631991 for triangular), and if the number of terminals changes, the control box has to change with it.11,9,22
  • Lofrans names the successors of its retired windlasses: Marlin → X1, Progress 1 and Project 1000 → X2, Progress 2 and Project 1500 → X3. The Project 1000 and 1500 still take the X2 and X3 gypsies, clutch cones and maintenance kits (72038, 72040); for the Progress and the Marlin only the old parts lists are online.11,6,9,29
  • If the windlass runs slowly or trips the breaker, check in this order: cable cross-section, connections, dirty brushes, water in the motor, and whether the deck unit and the gearbox below are parallel (shim them if not). At anchor or on a mooring, always take the load on a chain stopper: the windlass is not a strong point.16
  • When an X windlass replaces another one, measure the deck first: the standard studs and shaft suit 18–30 mm on the X1, 25–40 mm on the X2 and 50–70 mm on the X3. If the key shaft still engages the gearbox along its full length, longer studs are enough; otherwise ask Lofrans for a longer shaft.16,17,27

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Sources

  1. lofrans.com/download/01KFJM46NW0Q6GRV8XFSP6BMT7
  2. lofrans.com/products/lofrans-deck-hardware-accessories/maintenance-kit-x1
  3. lofrans.com/products/windlasses/x1-vertical-windlass
  4. lofrans.com/download/01KFNMN7YB85M7N2RNY3TFJM30
  5. lofrans.com/download/01KFJM46P1Q99A4E4294V0FFRK
  6. lofrans.com/products/windlasses/x2-vertical-windlass
  7. lofrans.com/download/01KFJM46P6CCKVXD5EASA88GZF
  8. lofrans.com/download/01KFJM46PB767FYPY53M2E5AAW
  9. lofrans.com/products/windlasses/x3-vertical-windlass
  10. jimmygreen.com/lofrans-accessories/51650-lofrans-replacement-gypsy
  11. lofrans.com/faq
  12. jimmygreen.com/lofrans-accessories/79497-lofrans-replacement-12v-motors
  13. jimmygreen.com/product/lofrans-replacement-24v-motors/
  14. lofrans.com/products/windlasses/falkon-horizontal-windlass
  15. lofrans.com/products/windlasses/kobra-horizontal-windlass
  16. lofrans.com/download/01KFJM43XHEF8R11N5B0KACMBB
  17. lofrans.com/download/01KFJM440KC8W3W9Y81TQE9455
  18. lofrans.com/download/01KFJM46897PVA1W5EZW59ZG3E
  19. lofrans.com/products/lofrans-deck-hardware-accessories/kit-s-magnetic-sensors
  20. lofrans.com/products/windlasses/cayman-horizontal-windlass
  21. lofrans.com/products/lofrans-deck-hardware-accessories/circuit-breaker-standard
  22. lofrans.com/products/lofrans-deck-hardware-accessories/control-boxes-solenoids-for-dc
  23. lofrans.com/products/lofrans-deck-hardware-accessories/foot-switch
  24. lofrans.com/products/lofrans-deck-hardware-accessories/inox-foot-switch
  25. lofrans.com/products/lofrans-deck-hardware-accessories/control-switch
  26. lofrans.com/products/lofrans-deck-hardware-accessories/kit-f-fingers
  27. lofrans.com/download/01KFJM46959X6GXK1X3J8PJ9EP
  28. lofrans.com/download/01KFJM444JDVAWGKVA5YGAKF6D
  29. lofrans.com/library

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