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Bessey® Professional Series 20" F Style Cold Drawn Alloy Steel Heavy Duty Sliding Arm Step Over Clamp With Morpad

Airgas Part #:JMC4800J-20

Bessey Tools

Manufacturer #:4800J-20

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$341.35 /Each
Package Size: 1 Each
$341.35 Each
$341.35 Each

Typically in Stock

Item Details

  • Bessey® J Series Heavy-Duty Clamp with 20" jaw opening provides user up to 4880 lb clamping pressure. Clamp with 7" throat depth has swivel morpad that tilts 35 deg. Clamp features high-strength electro-galvanized sliding pin T-handle with heat-treated, high carbon Acme threaded screw that is tempered and quenched to give greater load capacity with longer service life. It has ergonomic design for added comfort and is spatter-resistant.


  • Easy-to-use, just slide movable arm into position and tighten screw spindle
  • Instant Clamping at any opening
  • No wasted setup time
  • Save 90% of clamping time versus the ordinary C-clamp
  • Unique Bessey Morpad replaces a standard round ball and socket with an “engineered hemisphere and socket” for greater angle of pivot and a safer pad that won't pop out under pressure
  • Replacement arms, spindles and Morpads are available for Professional Series Bessey steel clamps
  • Rails and fixed top jaw are drawn, heat treated, tempered and quenched under rigid controls in Bessey’s own steel plant
  • 1800 Series and 2400 Series steel clamps are available with a Bessey Grip Handle a durable, comfortable accessory that fits snuggly over the standard steel sliding pin handle


  • For Extra Heavy Work Holding, Assembly, Fabrication and Repair


Warning: improper use can cause severe personal injury or property damage

Product Attributes

Clamp Type

» Step Over Clamp

Maximum Jaw Opening

» 20"


» F

Clamping Pressure

» 4880 lb

Handle Length

» 6 in

Trade Name

» Professional Series


» Alloy Steel

Rail Size

» 1 37/64" X 25/32"

Throat Depth

» 7 in

Screw Diameter

» 0.75"