Wheel tractor scrapers.

Caterpillar 619 '1959–????

Caterpillar 631 '1960–pr.

Caterpillar 631G Open Bowl Scraper '2001–16
Caterpillar 631K Open Bowl Scraper '2016–pr.
Caterpillar 631K Open Bowl Scraper '2016–pr.
Caterpillar 631E

Single-axle tractor models.

Caterpillar 632 '1962–????

Two-axle tractor model.

Caterpillar 650 '1962–????

Two-axle tractor model.

Caterpillar 651 '1962–????

Caterpillar 651E
 
 
 

Single-axle tractor models.

Caterpillar 657 '1962–pr.

Caterpillar 657G Open Bowl Scraper '2005–????
Caterpillar 657G Open Bowl Scraper '2005–????
Caterpillar 657G Open Bowl Scraper '2005–????
Caterpillar 657 '1962–69

Single-axle tractor models.

Caterpillar 660 '1962–????

Two-axle tractor model.

Caterpillar 666 '1962–????

Two-axle tractor model.

Caterpillar 641 '1962–81

Single-axle tractor model.

Caterpillar 621 '1965–????

Caterpillar 621H Open Bowl Scraper
Caterpillar 621G '2000–????
Caterpillar 621G Water Wagon
Caterpillar 621B

Caterpillar 633 '1966–????

Caterpillar 623, Caterpillar 633
 
 
 

Caterpillar 627 '1968–pr.

Caterpillar 627H Open Bowl Scraper '2011–pr.
Caterpillar 627K Open Bowl Scraper
Caterpillar 627K Open Bowl Scraper
Caterpillar 627G '2000–????

Caterpillar 613 '1969–????

Caterpillar 613C
Caterpillar 613G
Caterpillar 613C2
 

Caterpillar 623 '1972–pr.

Caterpillar 623G '2000–????
Caterpillar 623H Elevating Scraper '2012–pr.
Caterpillar 623K Elevating Scraper
Caterpillar 623H Elevating Scraper '2012–pr.

Caterpillar 639D '1979–????

Caterpillar 615 '1982–pr.

Caterpillar 615C
Caterpillar 615C
 
 

Caterpillar 611

Caterpillar 611
Caterpillar 611
 
 

WheelsAge.org '2005–pr.