Harken Protexit Blocks User manual

INSTRUCTIONS
Protexit™Blocks
WARNING! Strictly follow all instructions to avoid an accident, damage to your
vessel, personal injury or death. See www.harken.com/manuals for additional
safety information.
USA –Tel: [phone] • Web: www.harken.com • Email: [email protected]
Italy –Tel: [phone] • Web: www.harken.it • Email: techser[email protected]
Features
Strong, durable unibody top/side plates - hardcoat anodized forged aluminum.
Sculpted top plate - protects sheave and sheds line.
Tough sheaves - machined from hardcoat anodized solid aluminum.
Proven bearing system - composite sleeve bearing with sideload ball bearings.
High load drop-in replacement - 30 mm blocks replace Bullet® blocks. Larger blocks fit common
cutout and hole spacing allowing easy replacement.
Terms
1
Reeving side
Part number
Maximum line diameter
Maximum working load
Sheave
Sideplate
Block Loading vs Angle of Deflection
180°
150°
30°
90°
Block load increases when the line turns at a greater angle. Block loads double when the line turns
180°. If there is 400 kg (880 lb) on the line and the angle of deflection is 180°, the Harken through-
deck block is subject to 800 kg (1760 lb). Select blocks carefully. See specification chart on
next page. Angle of
deflection Load factor
Angle of
deflection Load factor
Angle of
deflection Load factor
30° 52% 90° 141% 150° 193%
45° 76% 105° 159% 160° 197%
60° 100% 120° 173% 180° 200%
75° 122% 135° 185% ——
Top plate

Specifications
*Tip: When selecting line diameter, use one
size smaller for smooth-running blocks. C
A
B
G
Part
No.
A - Sheave
diameter and
description
B -
Fasteners
(FH)
C - Hole
spacing
Top plate dimensions
F - Depth G - Maximum
working load
Breaking
loadD - Length E - Height
mm in mm in mm in mm in mm in kg lb kg lb
1200 30 mm single 5 #10 57 2.24 74.6 2.94 24.8 .98 20.5 .81 250 551 500 1103
1201 30 mm double 5 #10 79 3.12 97.1 3.82 24.8 .98 20.5 .81 250 551 500 1103
1202 40 mm single 6 1/4 83 3.27 106.7 4.20 24.1 .95 30.2 1.19 400 882 800 1764
1203 50 mm single 6 1/4 90 3.54 116.8 4.60 28.6 1.13 40.3 1.59 800 1764 1600 3528
1204 60 mm single 8 1/4 105 4.13 128.6 5.06 28.6 1.13 50.5 1.99 1200 2646 2400 5292
2
Part
No. Description
Sideplate Dimensions Cutout Dimensions
H - Width I - Length J - Width K - Length
mm in mm in mm in mm in
1200 30 mm single 17 .67 44.5 1.75 18.2 .72 45.7 1.80
1201 30 mm double 17 .67 68.8 2.71 18.2 .72 70.1 2.76
1202 40 mm single 18.4 .73 57.9 2.28 19.7 .78 59.2 2.33
1203 50 mm single 22 .87 70.2 2.76 23.3 .92 71.5 2.81
1204 60 mm single 23 .91 82.75 3.26 24.3 .96 84.0 3.31
D
E
Max line Ø*
Part Description mm in
1200 30 mm single
8 5/16
1201 30 mm double
1202 40 mm single
1203 50 mm single 12 1/2
1204 60 mm single
F
I
H
K
J

Warranty
For additional safety, maintenance, and warranty information see www.harken.com/manuals or the
Harken catalog.
M1024 04-18
3
Maintenance
Harken equipment is designed for minimal maintenance. However, some upkeep is required to give
the best service and comply with the Harken limited warranty.
Keep your equipment clean and free-running by frequently flushing with fresh water. Periodically
clean with mild detergent and water solution. Spin sheaves to distribute soap solution evenly.
Flush with fresh water.
IMPORTANT! Exposure to some teak cleaners and other caustic solutions can result in
discoloration of part and is not covered under the Harken warranty.
General Maintenance
Periodically clean with mild detergent and water solution. Spin sheave to distribute soap solution
evenly. Flush with fresh water.
Note: Sheave is not removable.
Periodically inspect all fasteners to make sure they are secure.