ID
1393823
$ 178.08
1-2 weeks delivery time
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+
SeaSure 01.12 is a 25 mm in-line mast sheave block designed for medium- to high-load applications with slow-running ropes. It uses a brass sheave with stainless steel side plates and a simple plain bearing, with an MBS / breaking load of 950 kg and an SWL of 475 kg. The block is intended for in-deck / mast installation and is fixed using 5 mm bolts or rivets.
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SeaSure 01.12 25 mm Brass Sheave In-Line Mast High-Load Block
SeaSure 01.12 is a 25 mm in-line mast sheave block designed to carry higher loads than standard Mini blocks. It is intended for medium- to high-load applications with slow-running ropes and is commonly used with Dyneema, Spectra and Kevlar lines.
The block uses a brass sheave together with stainless steel side plates. SeaSure states that the stainless steel side plates help prevent highly abrasive ropes from cutting into the block structure.
The in-line mast configuration is designed for fixed installation using 5 mm bolts or rivets, creating a compact rope-routing point within the mast or deck structure.
The SeaSure 01.12 has a maximum breaking strength (MBS) of 950 kg and a safe working load (SWL) of 475 kg. The supplied catalogue data specifies a maximum rope diameter of 5 mm, while SeaSure lists a maximum rope diameter of 4 mm.
Product Features
- Brand: SeaSure
- Manufacturer article number: 01.12
- Product type: In-line mast high-load sheave block
- Series: Mini
- Block type: In deck
- Sheave size: 25 mm
- Sheave material: Brass
- Side plate material: Stainless steel
- Bearing type: Simple / plain bearing
- Mounting type: In-line mast / in-deck
- Mounting hardware size: 5 mm bolts or rivets
- Maximum rope diameter: 5 mm according to supplied catalogue data
- Maximum rope diameter: 4 mm according to SeaSure
- Number of sheaves: 1
- MBS / breaking load: 950 kg
- SWL: 475 kg
- Swivel: No
- Ratchet: No
- Clamp: No
- Becket: No
- Colour: Stainless steel
Applications and Rope Types
- Medium- to high-load applications
- Slow-running ropes
- In-line mast rope routing
- In-deck rope routing
- Dyneema lines
- Spectra lines
- Kevlar lines
Technical Specifications
Parameter Specification Manufacturer Article 01.12 Series Mini Block Type In deck Mounting Type In-line mast Size 25 mm Number of Sheaves 1 Sheave Material Brass Bearing Simple / plain bearing Mounting Hardware 5 mm bolts or rivets Maximum Rope Diameter – Supplied Catalogue Data 5 mm Maximum Rope Diameter – SeaSure 4 mm MBS / Breaking Load 950 kg SWL 475 kg Swivel No Ratchet No Clamp No Becket No Colour Stainless steel -
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