Manufactured by Domingo Bengoechea s.a. in San Sebastian, Spain, Echea lathes tended to be of the larger type. Like many such makers, in addition to their standard range, they offered to make short run batches or even one-off specials to a customer's particular requirements. Changes to capacity, speed and feed ranges, etc. could all be accommodated.
From surviving data, four model ranges have been identified, C, B, BR, BRN, D & RA. All were intended for the machining of large workpieces with the "B" Series offered in five models, the B.700, B.800, BR.900, BR.1000 and BR.1100, all of the same basic mechanical design and construction with the Model number indicating the centre height in mm. Between-centres distances could be had as 3m, 4m, 5m, 6m, 8m, 10m and 12m, with weights varying between a minimum of 16 metric tons for the shortest bed B.700 to 37 metric tons for the longest bed BR1100. Using the gap in the bed, the B Models could swing an extra 300 mm in diameter, while the three BR types could swing, respectively, an extra 1.3m, 1.4m and 1.5m. On all models, the maximum thickness that could be machines of a faceplate was 400 mm.
Running in three high-precision bearings - two taper rollers at the front to take thrust in both directions and a cylindrical roller at the rear - the Model B spindle bore of 110 mm and the BR 150 mm. Both the B and BR were fitted with the same 50 h.p. motor and three electromagnetic clutches inside the headstock two controlling spindle forward and reverse, the other used exclusively for braking. The Model B types had 36 spindle speeds in three standard ranges of 12 speeds each. Using a crown wheel and pinion set into the back of the chuck, a very slow range from 1.5 to 19 r.p.m. was available; with normal control by the headstock gearing 24 to 300 r.p.m. and by direct V-belt drive 34 to 430 r.p.m. The more massive BR models had 24 speeds in two ranges, the special chuck gearing giving twelve speeds from 1.5 to 19 r.p.m. and, with normal internal headstock gearing, 24 to 300 r.p.m.
Both the B and BR had forty rates of longitudinal feed, these ranging from 0.2 to 5.6 mm/min for the B and 0.1 to 2.8 on the BR. The 40 cross-feed rates spanned 0.1 to 2.8 mm/min on the B and 0.05 to 1.4 on the BR
Screwcutting was identical on both types with 64 English Whitworth pitches ranging from 14 t.p.i. to 1/16", Metric from 2 to 448, Modular 0.5 to 112 and Diametral 65 to 1/4.
Less massive than the Model B and BR lathes, the D series was manufactured in three models - the number in their model name indicating the centre height - D-500, D-600 and D-700. Between-centres distances could be had as 1.5m, 2m, 2.5m, 3 m, 4m, 5m, 6m, 8m, 10m 12m and 14m. Weights varied between a minimum of 7,5 metric tons for the shortest bed D.500 to 20.7 metric tons for the longest bed D.700. With the gap in the bed removed, the D-500 could swing a maximum diameter of 1300 mm, the D-600 1500 mm and the D-700 1700 mm - on all models the maximum thickness able to be mounted on the faceplate was 400 mm.
Running in three high-precision, oversize bearings - two taper rollers at the front to take thrust in both directions and a cylindrical roller at the rear all versions had a spindle able to take a bar 150 mm in diameter.
All versions used the same two-speed 15/30 h.p. motor that gave a total of 24 speeds that ranged from 4 to 520 r.p.m. with engagement by two electromagnetic clutches that could be controlled from both the headstock and carriage.
All models had the same range of 63 longitudinal and power cross feeds, the former ranging from 0.031 to 3.472 mm/min and the latter from 0.015 to 1.68 mm/min. Screwcutting rates were also the same across the range being 65 metric pitches from 0.6 to 1112 mm; 72 English Whitworth from 32 t.pi.; 50 Modular from 0.125 to 28 and 72 Diametral from 128 to 1.75
Fuller details and a complete specification of all types, C, B, BR, BRN, D & RA, can be found below.