Bulkhead steerers type 20, 25 and 30


 
The BS25 bulkhead steerer
 
The Jefa BS25 type bulkhead steerer incorporates twin high efficiency 25 mm ball bearings, which are double sealed and pre-lubricated for a long and maintenance free life. The lip seal at the front is the especially developed Jefa PUR seal, which contains no metal parts for a life long problem free usage. The stainless steel steering shaft has a diameter of 25 mm to guarantee a stiff and strong steering arrangement for wheels up until 1300 mm diameter. Above 1300 mm wheel size one should add a support bearing at the aft side of the steering shaft (like the BS30 unit). The maximum wheel size accepted is 1500 mm, above 1500 mm wheel diameter the BS30 should be used. The large internal brake dish provides an efficient and strong braking arrangement. The number of turns achieved with the various sprockets can be found in our sprocket table.
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General measurements standard unit

General measurements extended version with support bearing

BS25 integrated steering disengagement unit:
Jefa Steering has developed a disengagement steering unit to be used in all Jefa WP700-WP900 cable steering pedestals (using the BS25 steerer). As most boats nowadays are equipped with twin wheel steering, the helmsman experiences an echo of the inertia of the non-used wheel. When sailing on autopilot, both wheels have to be speeded up and down continuously causing a high power consumption and wear. The ideal solution would be if the wheel could be easily disengaged from the mechanical steering system by the helmsman. The Jefa integral disengagement steering unit offers an unique solution.   Disengagement units in the steering wheel hubs do exists, but at very high costs and causing the steering wheel hub to be very bulky so only usable on big stainless steel double spoked wheels. Modern boats use smaller (twin)  wheels made of aluminium, carbon or GRP. Disengagement units for these modern wheels don’t exist on this moment.

What makes the Jefa integrated disengagement steering unit unique and an absolute innovation?

  1. Easy and safe to operate by simply rotating the brake knob of the steering system.
  2. The disengagement unit is fully invisible as it is integrated in the steering pedestal.
  3. Excellent styling as no parts, levers or mini wheels are sticking out of the wheel hub area.
  4. Significant safety advantage due to the non-rotating wheel(s) during autopilot cruise.
  5. Superb feel while manual sailing due to the lack of friction and inertia of the wheel not in use.
  6. No more unnecessary energy loss and steering system wear while sailing on autopilot.
  7. The intelligent construction uses tapered self-searching gears for quick engagement.
  8. Retrofittable to all thousands of existing Jefa cable steering pedestals.
  9. Affordable price level (295 euro surcharge on an new system and 699 euro for a retrofit unit including new steerer (prices excluding VAT).

 

Please follow this link to YouTube for an animation of the functioning.

General measurements BS25 version with disengagement unit

Price overview

BS25 bulkhead steerers with 25 mm taper

Part No.

Description

Price in Euro

BS25-11 BS25 bulkhead steerer with 11 teeth 5/8" st.st. sprocket € 425
BS25-13

BS25 bulkhead steerer with 13 teeth 5/8" st.st. sprocket

€ 438

BS25-15

BS25 bulkhead steerer with 15 teeth 5/8" st.st. sprocket

€ 438

BS25-17

BS25 bulkhead steerer with 17 teeth 5/8" st.st. sprocket

€ 438

BS25-SUP

Support bearing for BS25 bulkhead steerer

€ 106

WS-DIS

Disengagement unit integrated in steerer/pedestal

€ 311


The BS20 bulkhead steerer
 
The Jefa BS20 type bulkhead steerer incorporates a high efficiency 25 mm ball bearing, which is double sealed and pre-lubricated for a long and maintenance free life. Due to this single bearing arrangement (for compact dimensions) the BS20 steerer should always be used in conjunction with the BS20-SUP support bearing. The lip seal at the front is the especially developed Jefa PUR seal, which contains no metal parts for a life long problem free usage. The stainless steel steering shaft has a diameter of 25 mm to guarantee a stiff and strong steering arrangement for wheels up until 1500 mm diameter, above 1500 mm wheel diameter the BS30 should be used. The large internal brake dish provides an efficient and strong braking arrangement. The number of turns achieved with the various sprockets can be found in our sprocket table.
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General measurements

Price overview

BS20 bulkhead steerers with 25 mm taper

Part No.

Description

Price in Euro

BS20-11 BS20 bulkhead steerer with 11 teeth 5/8" st.st. sprocket € 387
BS20-13

BS20 bulkhead steerer with 13 teeth 5/8" st.st. sprocket

€ 400

BS20-SUP

Support bearing for BS20 bulkhead steerer

€ 106


The BS30 group bulkhead steerer

The Jefa BS30 type bulkhead steerer incorporates twin high efficiency 30 mm ball bearings, which are double sealed and pre-lubricated for a long and maintenance free life.
The lip seal at the front is the specially developed Jefa PUR seal, which contains no metal parts for a life long problem free usage.
The stainless steel steering shaft has a diameter of 30 mm to guarantee a stiff and strong steering arrangement for wheels up until 1900 mm diameter.
The taper is available in 2 versions: 25 mm international taper, suitable for Jefa steering wheels up until 1500 mm and the 30 mm international taper for Jefa steering wheels above 1500 mm diameter.
The large internal brake dish provides an efficient and strong braking arrangement.
The stainless steel backing plate is standard supplied with 6 mounting bolts.
A large range of sprockets is available to achieve the required number of turns of the steering wheel in combination with the chosen quadrant (see the sprocket table).
The steering is available without the ball for the aft bearing for yachts with very rigid bulkhead in combination with a wheel smaller than 1300 mm diameter.
The steering shaft is variable in length to suit the customer requirements.
Click for larger view
Click for larger view
Click for larger view
General measurements

Price overview

BS30 bulkhead steerers with 25 mm taper (for 30 mm taper please add /T30 to part number)

Part No.

Description

Price in Euro

BS30-11 BS30 bulkhead steerer with 11 teeth 5/8" st.st. sprocket € 645
BS30-13 BS30 bulkhead steerer with 13 teeth 5/8" st.st. sprocket € 668
BS30-15 BS30 bulkhead steerer with 15 teeth 5/8" st.st. sprocket € 668
BS30-17 BS30 bulkhead steerer with 17 teeth 5/8" st.st. sprocket € 668
BS30-19 BS30 bulkhead steerer with 19 teeth 5/8" st.st. sprocket € 668
BS-SUP1 Support bearing for BS30 bulkhead steerer € 83