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Orbit Block - Series 20, Ball Bearing (BB)

Orbit Block - Series 20, Ball Bearing (BB)

The incredible Series 20 Orbit Block™ is capable of loads up to 250kg (550lb) while weighing a mere 9 grams. It’s so light that it needs to be lashed down! Great for control lines on dinghies and catamarans to 5m (16ft).

Materials:
  • Sheave: High compression strength carbon Acetal
  • Ball bearings: stainless steel
  • Frame/Cheeks: Nylon

    Description Sheave Dia. Max Rope Max Working Load Breaking Load Weight
    in mm in mm lb kg lb kg oz g
    Series 20 Ball Bearing Block 3/4 20 1/4 6 550 250 1,210 550 0.30 9


    Product Review:
    This product has been reviewed on APS' Blog, The Stern Scoop; take a look for more information.


  • RF25109 20mm Orbit Block: Single, Lashing Price: $12.71


    Orbit Blocks - Series 30, Ball Bearing (BB)

    Orbit Blocks - Series 30, Ball Bearing (BB)

    Orbit Blocks™ represent the future of racing sailboat hardware. The choice of the world’s best racing sailors, they offer a no-compromise solution. Their flexible lashing and Dyneema® Link technology comes from the latest trends in development classes and grand prix ocean racing. The product of meticulous engineering, they deliver the ultimate in strength, weight saving and control.

    Advanced fibre and polymer technology that is up to ten times stronger than steel delivers a product that is more compact and lighter too. Through 3D modelling, Finite Element stress analysis and mould flow analysis, our engineers made sure that everything performs both in the laboratory and in the real world. Months of on-water testing by elite sailors pushed the product to their limits. After further optimisation and fine-tuning, they’re now ready for you to test!
    Applications:

  • Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft)
  • Halyard, vang and backstay applications on boats to 5m (16ft)
  • Control line applications on larger yachts


  • Materials:

  • Sheave: High compression strength carbon black Acetal
  • Ball Bearings: High compression strength Acetal
  • Frame/Cheeks: Toughened, glass fibre reinforced Nylon
  • Link: UV stabilised, multi-strand impregnated SK75 Dyneema®
  • Note: “D” suffix blocks have a self-lubricating Nylatron® sheave and full contact bearing for high dynamic loads


  • Part #: Description Sheave Dia. Max Rope Max Working Load Breaking Load Weight
    in mm in mm lb kg lb kg oz g
    RF35100 Single, Swivel 1-3/16 30 5/16 8 661 300 1,323 600 1.10 32
    RF35100A Single, Head Post 1-3/16 30 5/16 8 661 300 1,323 600 1.10 31
    RF35100D Single, Swivel (Nylatron) 1-3/16 30 5/16 8 661 300 1,323 600 1.10 31
    RF35101 Single, Lashing 1-3/16 30 5/16 8 661 300 1,323 600 0.80 22
    RF35101D Single, Lashing (Nylatron) 1-3/16 30 5/16 8 661 300 1,323 600 0.70 21
    RF35140 Single, Stand Up, Swivel 1-3/16 30 5/16 8 661 300 1,323 600 1.20 33
    RF35141 Single, Stand Up 1-3/16 30 5/16 8 661 300 1,323 600 1.30 36
    RF35151 Cheek 1-3/16 30 5/16 8 661 300 1,323 600 0.70 21
    RF35202 Double 1-3/16 30 5/16 8 992 450 1,984 900 1.70 50
    RF35212 Double w/ Becket 1-3/16 30 5/16 8 992 450 1,984 900 1.80 51
    RF35284 Linked 1-3/16 30 5/16 8 661 300 1,323 600 1.60 46
    RF35286 Clew Ring 1-3/16 30 5/16 8 661 300 1,323 600 2.20 63
    RF35302 Triple 1-3/16 30 5/16 8 1,213 550 2,425 1,100 2.60 73
    RF35312 Triple w/ Becket 1-3/16 30 5/16 8 1,213 550 2,425 1,100 2.60 75
    RF35322 Triple w/ Cleat 1-3/16 30 5/16 8 1,213 550 2,425 1,100 4.40 124
    RF35332 Triple w/ Becket & Cleat 1-3/16 30 5/16 8 1,213 550 2,425 1,100 4.50 126


    RF35100 30mm Orbit Block: Single, Swivel Price: $18.66 RF35100A 30mm Orbit Block: Single, Head Post Price: $25.46
    RF35100D 30mm Orbit Block: Single, Swivel (Nylatron) Price: $25.46 RF35101 30mm Orbit Block: Single, Lashing Price: $13.56
    RF35101D 30mm Orbit Block: Single, Lashing (Nylatron) Price: $20.36 RF35140 30mm Orbit Block: Single, Stand Up, Swivel Price: $25.46
    RF35141 30mm Orbit Block: Single, Stand Up Price: $20.36 RF35151 30mm Orbit Block: Cheek Price: $14.41
    RF35202 30mm Orbit Block: Double Price: $33.96 RF35212 30mm Orbit Block: Double w/ Becket Price: $34.81
    RF35302 30mm Orbit Block: Triple Price: $44.16 RF35322 30mm Orbit Block: Triple w/ Cleat Price: $74.76
    RF35332 30mm Orbit Block: Triple w/ Becket & Cleat Price: $75.61


    Orbit Blocks - Series 40, Ball Bearing (BB)

    Orbit Blocks - Series 40, Ball Bearing (BB)

    Ronstan’s proven ‘two-stage’ bearing system enhances durability and low friction performance across the full working load range. The Dyneema® link provides a more flexible, lighter weight and lower profile solution than traditional shackles. It is also more compatible with Dyneema®/Spectra® strops, webbing and carbon connection points than steel loop tops or shackles. Can be set at 0 or 90o orientation, provides stress free articulation with no over-rotation and a security clip locks it in place. Suitable for sheet applications on dinghies, sportsboats and small one-design keel boats, vang and backstay applications on boats to 9m (30’), and control lines on larger boats.

    Applications:
    - Mainsheet and Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft).
    - Halyard, Vang and Backstay applications on boats to 8m (26ft).

    Materials:
    Sheave: Carbon fiber reinforced, PTFE & silicon impregnated Nylon
    Ball Bearings: High compression strength carbon black Acetal
    Stage 2 Bearing: Carbon fiber reinforced, PTFE impregnated Nylon
    Housing/Cheeks: Toughened, glass fiber reinforced Nylon
    Rope Link: UV stabilised, multi-strand impregnated SK75 Dyneema®

    Ronstan Series 40 BB Orbit Blocks - Ball Bearing
    Part # Description Sheave Diameter Max Rope M.W.L. Breaking Load Weight
    in mm in mm lb kg lb kg oz g
    RF45101 Single 1-9/16 40 5/16 9 715 325 1,540 700 1.20 33
    RF45110 Single w/ Becket and Swivel Head 1-9/16 40 5/16 9 715 325 1,430 650 1.60 44
    RF45111 Single w/ Becket 1-9/16 40 5/16 9 715 325 1,540 700 1.30 36
    RF45131 Single w/Becket & Cleat 1-9/16 40 5/16 9 715 325 1,540 700 3.50 98
    RF45151 Cheek 1-9/16 40 5/16 9 715 325 1,540 700 1.10 32
    RF45201 Double 1-9/16 40 5/16 9 1,100 500 2,205 1,000 2.40 67
    RF45211 Double w/ Becket 1-9/16 40 5/16 9 1,100 500 2,205 1,000 2.50 72
    RF45301 Triple 1-9/16 40 5/16 9 1,430 650 2,975 1,350 3.50 98
    RF45311 Triple w/Becket 1-9/16 40 5/16 9 1,430 650 2,975 1,350 3.70 105
    RF45501 Fiddle 1-9/16 40 5/16 9 715 325 1,540 700 1.70 47
    RF45511 Fiddle w/ Becket 1-9/16 40 5/16 9 715 325 1,540 700 1.70 48
    RF45521 Fiddle w/ Cleat 1-9/16 40 5/16 9 715 325 1,540 700 3.80 108
    RF45531 Fiddle w/ Adj. Cleat 1-9/16 40 5/16 9 715 325 1,540 700 3.80 109


    RF45110 40mm Orbit Block: Single w/Swivel Head Price: $27.58 RF45151 40mm Orbit Block: Cheek Price: $24.61
    RF45201 40mm Orbit Block: Double Price: $52.66 RF45531 40mm Orbit Block: Fiddle w/Becket & Cleat Price: $95.16


    Orbit Blocks - Series 40 Auto-Manual Ratchet (RT)

    Orbit Blocks - Series 40 Auto-Manual Ratchet (RT)

    Bettering the world’s ultimate ratchet block is no mean feat, but that’s exactly what the Ronstan Series 40mm Orbit Block has done. A unique sheave design has 12 gripping faces that directly resist loaded line movement and provide up to 25:1 holding power, nearly double that of its nearest competitor! Available as autoratchet or manual. Sophisticated, sheave cross-hole geometry delivers superior rope wear performance and is lighter weight than its closest competitors. The machined alloy sheave and ingeniously simple mechanism ensure reliability and long life. Essential equipment when you want the most holding power you can get.

    In Auto mode the ratchet mechanism engages automatically when load is applied to the block, but switches off when the load is released to allow the sheet to run out smoothly and freely. This is particularly beneficial for rapid sheeting out in bear-aways at the top mark and for tacking asymmetric spinnakers.

    In Manual mode the ratchet mechanism can be switched on or off as required. This is still often the preferred feel for mainsheets by many top sailors. In the end manual or auto mode often comes down to personal feel preference. Try the block in both modes and make up your own mind – you really can’t go wrong.

    Applications:
    - Dinghy mainsheets on boats such as Optimist, Laser, 470’s and 49er.
    - Sportsboat mainsheet systems using RF7 mainsheet swivel cleat unit.
    - Spinnaker sheets on dinghies – especially modern asymmetric classes such as 29er, 49er, I14, etc.
    - Sportsboat and small keel boat spinnaker sheets (lateral lead blocks).
    - Control line applications on larger yachts.

    Materials:
    Sheave: Hard anodized Aluminum
    Ball Bearings: High compression strength carbon black Acetal
    Housing/Cheeks: Toughened, glass fibre reinforced Nylon
    Rope Link: UV stabilised, multi-strand impregnated SK75 Dyneema®

    Part # Description Sheave Diameter Max Rope M.W.L. Breaking Load Weight
    in mm in mm lb kg lb kg oz g
    RF46100 Single, Auto with Swivel Shackle 1-9/16 40 5/16 9 385 175 1,100 500 1.5 44
    RF46100M Single, Manual with Swivel Shackle 1-9/16 40 5/16 9 385 175 1,100 500 1.5 44
    RF46101 Single, Auto 1-9/16 40 5/16 9 385 175 1,100 500 1.2 35
    RF46102 Single, Manual 1-9/16 40 5/16 9 385 175 1,100 500 1.20 35
    RF46111 Single, Auto w/ Becket 1-9/16 40 5/16 9 385 175 1,100 500 1.40 41
    RF46112 Single, Manual w/ Becket 1-9/16 40 5/16 9 385 175 1,100 500 1.40 41
    RF46121 Single, Cleat 1-9/16 40 5/16 9 385 175 1,100 500 3.40 95
    RF46131 Single, Becket, Cleat 1-9/16 40 5/16 9 385 175 1,100 500 3.60 101
    RF46151 Cheek, Clockwise (Auto Only) 1-9/16 40 5/16 9 385 175 1,100 500 1.30 36
    RF46151A Cheek, Counter-Clockwise (Auto Only) 1-9/16 40 5/16 9 385 175 1,100 500 1.30 36


    RF46100 40mm Orbit Ratchet: Single w/ Swivel Shackle Price: $60.31 RF46100M 40mm Orbit Ratchet: Single Manual w/ Shackle Price: $59.46
    RF46131 40mm Orbit Ratchet: Single w/Becket & Cleat Price: $103.66 RF46151 40mm Orbit Ratchet: Cheek, Clockwise Price: $52.66
    RF46151A 40mm Orbit Ratchet: Cheek, Cntr-Clockwise Price: $52.66


    Orbit Blocks - Series 55, Ball Bearing (BB)

    Orbit Blocks - Series 55, Ball Bearing (BB)

    Ronstan’s proven ‘2-stage’ bearing system further enhances durability and low friction performance across the full working load range. The flexible Dyneema® link is an extension of latest trends in grand prix ocean racing and provides a more flexible, lighter weight and lower profile solution than traditional shackles. It can be set at 0 or 90 degree orientation, provides stress free articulation without allowing over-rotation, and is locked in place with a security clip. The Ronstan Dyneema® link is also more compatible with Dyneema®//Spectra® strops and, webbing and carbon connection points than steel loop tops or shackles. 55mm Ball Bearing Orbit Blocks™ are suitable for sheet applications on dinghies, sportboats and small one-design keel boats and for control lines on larger boats.

    Applications:
    - Mainsheet and Spinnaker sheets on dinghies, sportboats and small keel boats to 9m (30ft).
    - Halyard, Vang and Backstay applications on boats to 8m (26ft).

    Materials:
    Sheave: Carbon fiber reinforced, PTFE & silicon impregnated Nylon
    Ball Bearings: High compression strength carbon black Acetal
    Stage 2 Bearing: Carbon fiber reinforced, PTFE impregnated Nylon
    Housing/Cheeks: Toughened, glass fiber reinforced Nylon
    Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema®

    Ronstan Series 55 BB Orbit Blocks - Ball Bearing
    Part # Description Sheave Diameter Max Rope M.W.L. Breaking Load Weight
    in mm in mm lb kg lb kg oz g
    RF55101 Single 2-5/32 55 3/8 10 1,100 500 2,200 1,000 2.4 68
    RF55110 Single w/ Becket & Swivel Head 2-5/32 55 3/8 10 1,100 500 2,200 1,000 3.1 88
    RF55111 Single w/ Becket 2-5/32 55 3/8 10 1,100 500 2,200 1,000 2.6 75
    RF55151 Cheek 2-5/32 55 3/8 10 1,100 500 2,200 1,000 2.5 70
    RF55171 Upright Lead 2-5/32 55 3/8 10 1,100 500 2,200 1,000 3.2 91
    RF55201 Double 2-5/32 55 3/8 10 1,765 800 3,520 1,600 4.7 134
    RF55210 Double w/ Becket/Swivel Shackle 2-5/32 55 3/8 10 1,650* 750* 3,300 1,500 6.1 172
    RF55211 Double w/ Becket 2-5/32 55 3/8 10 1,765 800 3,520 1,600 4.9 140
    RF55301 Triple 2-5/32 55 3/8 10 2,200 1,000 4,410 2,000 7.2 205
    RF55310 Triple w/ Becket.Swivel Shackle 2-5/32 55 3/8 10 1,650* 750* 3,300 1,500    
    RF55311 Triple w/ Becket 2-5/32 55 3/8 10 2,200 1,000 4,410 2,000 7.6 215
    RF55410 Quad w/ Becket/Swivel Shackle 2-5/32 55 3/8 10 1,650* 750* 3,300 1,500 11.2 316
    RF55501 Fiddle 2-5/32 + 1-3/8 55 + 35 3/8 10 1,100 500 2,200 1,000 3.4 95
    RF55511 Fiddle w/ Becket 2-5/32 + 1-3/8 55 + 35 3/8 10 1,100 500 2,200 1,000 3.4 97
    RF55521 Fiddle w/ Adj. Cleat 2-5/32 + 1-3/8 55 + 35 3/8 10 1,100 500 2,200 1,000 8.1 231
    RF55531 Fiddle w/ Becket, Adj. Cleat 2-5/32 + 1-3/8 55 + 35 3/8 10 1,100 500 2,200 1,000 8.2 223

    * Total block load. Load on becknet not to exceed 33% of block load. MWL - 250g (550lbs) & Breaking Load - 500kg (1,100lbs).

    RF55110 55mm Orbit Block: Single w/ Becket & Swivel Price: $39.91 RF55151 55mm Orbit Block: Cheek Price: $33.96
    RF55171 55mm Orbit Block: Upright Lead Price: $47.56 RF55201 55mm Orbit Block: Double Price: $74.76
    RF55210 55mm Orbit Block: Double w/ Becket & Swivel Price: $83.26 RF55310 55mm Orbit Block:Triple w/ Becket & Swivel Price: $105.36
    RF55410 55mm Orbit Block: Quad w/ Bec & Swivel Shackle Price: $169.96


    Orbit Blocks - Series 55, Accessories

    Orbit Blocks - Series 55, Accessories

    RF2455: Stand-Up Base: Kit features a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It’s a neat, low-profile solution which allows full articulation.

    RF900408: Dyneema Link: Replacement link that suits all single & fiddle Ball Bearing(BB) or Ratchet(RT) blocks.

    RF900510: Dyneema Link: Replacement link that suits all double & triple Ball Bearing(BB) or Ratchet(RT) blocks.

    RF50001: Link Retainer Clip: Replacement retainer clip that suits all single and fiddle Ball Bearing(BB) or Ratchet(RT) Blocks.

    RF50002: Link Retainer Clip: Replacement retainer clip that suits all double Ball Bearing(BB) and Ratchet(RT) blocks, as well as triple Ratchet(RT) blocks.

    RF50003: Link Retainer Clip: Replacement retainer clip that suits all triple Ball Bearing (BB) blocks.

    RF2455 Stand Up Base: Series 55 BB & RT Blocks Price: $9.31 RF50001 Link Retainer Clip: Series 55 Single & Fiddle Price: $3.36
    RF50002 Link Retainer Clip: Series 55 Double & Triple Price: $3.78 RF50003 Link Retainer Clip: Series 55 BB Triple Price: $3.78
    RF900408 Dyneema Link: S55 Singl/Fiddle, S40 Dbl/Trp Price: $9.31 RF900510 Dyneema Link: S55 Double/Triple, S70 Single Price: $9.31


    Orbit Blocks - Series 70, Ball Bearing (BB)

    Orbit Blocks - Series 70, Ball Bearing (BB)

    Kilogram for kilogram of working load, BB Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave, minimizing the mass of the inactive return race and hub. The orbital ball-bearing arrangement gives the largest possible bearing race diameter, which maximises load performance. The Dyneema® Link is produced from FSE Robline SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point. The flexible Dyneema® Link also provides controlled rotation and 0° or 90° orientation. It connects directly to the head of the block rather than to an intermediate head post, reducing weight and giving the lowest possible profile while allowing full articulation.

    Applications:
    - Mainsheet systems and spinnaker sheets on sportsboats and small keelboats to 11m (36ft)
    - Halyard, Vang and Backstay application on boats to 9m (30ft)
    - Control line applications on larger yachts

    Materials:
    Ball Bearings: High compression strength carbon black Acetal
    Stage 2 Bearing: Carbon fibre reinforced, PTFE impregnated Nylon
    Frame/Cheeks: Toughened, glass fibre reinforced Nylon
    Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema®

    Ronstan Series 70 BB Orbit Blocks - Ball Bearing
    Part # Description Sheave Diameter Max Rope M.W.L. Breaking Load Weight
    in mm in mm lb kg lb kg oz g
    RF75101 Single 2-3/4 70 1/2 12 1,540 700 3,830 1,400 4.5 128
    RF75111 Single w/ Becket 2-3/4 70 1/2 12 1,540 700 3,830 1,400 5.0 141
    RF75151 Cheek 2-3/4 70 1/2 12 1,540 700 3,830 1,400 4.3 122
    RF75211 Double w/ Becket 2-3/4 70 1/2 12 2,420 1,100 3,830 2,200 9.7 274


    RF75151 70mm Orbit Block: Cheek Price: $64.56


    Orbit Blocks - Series 70, Auto Ratchet (RT)

    Orbit Blocks - Series 70, Auto Ratchet (RT)

    The auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. Quite simply, Ronstan Ratchet Series 70 Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. The Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip and the flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.

    Applications:
    - Dinghy mainsheet systems - when maximum holding power is required.
    - Mainsheet systems on sportsboats using RF7 mainsheet swivel cleat unit.
    - Control line applications on larger yachts.
    - Spinnaker sheets on sportsboats and small keel boats (lateral lead blocks).
    - Spinnaker sheets on sports boats and small keel boats - especially modern asymmetric classes.

    Materials:
    Sheave: Hard anodised Aluminium.
    Ball Bearings: High copression strength carbon block Acetal.
    Frame/Cheeks: Toughened, glass fibre reinforced Nylon.
    Rope/Link: UV stablised, multi-strand impregnated SK75 Dyneema.

    Ronstan Series 70 RT Orbit Blocks
    Part # Description Sheave Diameter Max Rope M.W.L. Breaking Load Weight
    in mm in mm lb kg lb kg oz g
    RF76101 Single, Auto 2-3/4 70 3/8 10 660 300 2,750 1,250 5.3 150
    RF76111 Single w/ Becket, Auto 2-3/4 70 3/8 10 660 300 2,750 1,250 5.7 162




    Orbit Blocks - Series 70, Accessories

    Orbit Blocks - Series 70, Accessories

    RF2457: Stand-Up Base: Kit features a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It’s a neat, low-profile solution which allows full articulation.

    RF900510: Dyneema Link: Replacement link that suits all Series 70 Single Ball Bearing(BB) or Ratchet(RT) blocks.

    RF900612: Dyneema Link: Replacement link that suits all Series 70 Double Ball Bearing(BB) blocks.

    RF70001: Link Retainer Clip: Replacement retainer clip that suits all Series 70 Single Ball Bearing(BB) or Ratchet(RT) Blocks.

    RF70002: Link Retainer Clip: Replacement retainer clip that suits all Series 70 Double Ball Bearing(BB) blocks.

    RF2457 Stand Up Base: Series 70 BB & RT Blocks Price: $12.71 RF70001 Link Retainer Clip: Series 70 Single Blocks Price: $3.36
    RF70002 Link Retainer Clip: Series 70 Double Blocks Price: $3.36 RF900510 Dyneema Link: S55 Double/Triple, S70 Single Price: $9.31
    RF900612 Dyneema Link: Series 70 BB Double Price: $9.31

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