Blocks

Blocks

Overhaul Balls
Crane Blocks
Wire Rope Snatch Blocks Wire Rope Sheaves Wedge Sockets
Oilfield Blocks
Swivels
Manila Rope Blocks

OVERHAUL BALLS

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Johnson Overhaul Balls supply the downfall weight necessary to counter bearing friction and winchto-boom-tip line weight. Because these units must meet a wide range of field  applications, we offer an equally wide range of unit sizes. It is, in fact, one of the widest ranges available—over 240 models, 35 through 1150 pounds; 3 through 30 tons W.L.L. Non-swivel balls are also available.

STANDARD FEATURES
3 through 30 tons
35 through 1150 pounds
• 4 to 1 design factor
Heavy duty J-Latch standard

OPTIONAL FEATURES
• High capacity, custom engineered
balls available upon request

FIXED BAIL CONSTRUCTION AND MARINE RIGGING BLOCKS

Johnson offers a host of advantages in this product line. Beginning with 100 standard models, you are assured of selections that fit your every need. The lowest weight to capacity ratios, the quickest rigging and the easiest maintenance are a few additional benefits that prove once again that Johnson Blocks are consistent in quality and value. 

STANDARD FEATURES
3 through 30 tons
35 through 1150 pounds
• 4 to 1 design factor
Heavy duty J-Latch standard

OPTIONAL FEATURES
• High capacity, custom engineered
balls available upon request

SHORTY “J” CRANE BLOCKS

Shorty “J” is one of today’s most popular crane blocks, and for a good reason. The J-Block can be used with all types of mobile cranes, truck cranes, overhead cranes, hydraulic and cable cranes. Johnson Quick Reeve crane blocks are also available.

STANDARD FEATURES
• 3 thru 350 ton capacities
• 4 to 1 design factor
• 1 through 8 sheaves
• 10 through 30 inch sheave diameters
• Reeving guides, all models
• Bronze bushed and roller bearing sheaves
• Direct-channel sheave bearing lubrication through center pin
• Flame hardened grooves on sheave sizes 16 through 30 inch diameters.
• Dual action (swing/swivel) roller thrust bearing hooks
• Forged steel hooks – 3 through 30 tons
• Total disassembly capability

OPTIONAL FEATURES
• Forged steel hooks – 35 through 300 tons
• Cast alloy steel duplex hooks with bar latch
25 through 1,750 tons
• Cast alloy steel quad hooks
• Forged steel duplex hooks
• Anti-rotation locking devices, all models
• Swivel safety anchor shackles, all models
• Sheave shrouds, all models
• Detachable cast iron and steel cheek weights, all models
• Pull test and certification, radiograph, magnetic particle, and
other non-destructive testing to specification designated by
customer

QUICK REEVE Mobile Crane Block

STANDARD FEATURES
• Quick release, zinc plated, rope retention pin meets
OSHA requirements for rope retention. Cannot be
completely removed from block to avoid pin loss.
• Johnson J-Latch™ heavy duty, steel, lockable,
spring loaded latch meets OSHA personnel lifting
requirements.
• The Johnson J-Latch™ provides a fast hook
deformation inspection point.
• Available tonnage capacities from 5-300 tons. Larger
capacities available upon request.
• Quick Reeve™ upright design rests on its own hook
for a stable base while reeving.
• No bulky, drop down, trap door to handle or
damage.
• Wire rope end tting will pass through block without
removal from wire rope.

SNATCH BLOCKS

235 standard models of single and double sheave snatch blocks are offered. Capacities range from 2 through 30 metric tons; sheave diameters from 3 through 24 inches. Only top grade materials are used for each component.

Johnson Snatch Blocks have the convenient side opening feature. This is true even of our heavy duty top dead-end models, and makes it easy to reeve the block without removing any fittings from the end of the wire rope. Other features include choice of swivel hook, shackle, eye fittings, or Tailboard Blocks (which have no fittings at all).

Snatch-Blocks

WIRE ROPE SHEAVES

3” to 108”, and over 250 standard models, Johnson Wire Rope Sheaves are industry proven with over 100,000 in use. Cost efficient
custom designs are available with no upfront tooling or pattern charges and no premium for small order quantities. 16” to 108” O.D. sheaves have flame hardened, precision grooves for slow, even wear and long rope life. (Less than 16” O.D.  flame hardened upon request.) The integrity of Johnson’s single disc forged steel construction provides a sheave with superior strength.

STANDARD FEATURES
• 3 through 108 inch sheave diameters
• 1/4 through 3 inch wire rope sizes
• 4 to 1 design factor
• Cast iron, ductile iron, cast steel, ForgeFab steel types

OPTIONAL FEATURES
• Custom designs to customer shaft, bearing mounting, hub, sheave O.D. or wire rope size requirement
• Electroplate inorganic zinc compound and other corrosion resistant coatings available
• Hub-located grease fittings
• Modifications as required to API and other applicable industry standards
• Special shafts, furnished for any sheave listed
• AISE No. 6 specifications
• Cold weather properties

OPEN WEDGE SOCKETS

Open Wedge Sockets combine positive attachment with optimum versatility. Easy-to-change Johnson Wedge Sockets are a high strength cast alloy steel with charpy value of 25 lbs/ft. at -4 F. Each socket accepts at least two different ductile iron wedges.  This allows the socket to be used with more than one rope size. Together, wedge and body act as a vise which grips the wire rope and locks it into place. The headed attachment pin is standard and has a charpy value of 25 lbs/ft. at -4 F.

Open-Wedge-Sockets

OILFIELD BLOCKS

Johnson has been producing oilfield equipment for over five decades. Because of this expertise in sheaves and blocks, as well as an on-site heat treat facility, Johnson has become a respected manufacturer for the petroleum industry. We know the needs and we know how to fulfill them with quality lifting devices. High capacity, custom engineered oilfield blocks available upon request.

SWIVELS

Standard designs are available in a wide variety of styles. Engineered for long life at a reasonable cost. Features include roller thrust bearings, recessed grease fittings and hooks of drop forged steel. All swivels have a 4 to 1 design factor. High capacity, custom engineered swivels available upon request. Heavy duty J-Latch standard on hook models.

swivels
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For detailed information about our Blocks, go to pages 137-144 in the Full Catalog