Singer 191D manual 7

2.2

Machine

Specification

Table 1 – Machine Specification

Singer	Application	Maximum
Model		Speed
		[spm]
191D-20	Light to
		5,000
	medium
191D-20C
191D-30	Medium to
		4,500
	heavy
191D-30C
191D-70
	Heavy	3,000
191D-70C

Stitch	Height of	Needle	Hook	Hook	Needle Cat.	Lubrication Lubrication
Length	Presser Foot	Bar	Type	Origin			Oil
[mm]	by hand / by	Stroke
	knee [mm]	[mm]
				Standard
5.0	5.5/13.0	30.7			1955-01 #14
				Koban/
			Regular	Hirose
				Standard		Fully	Singer “C”
5.0	5.5/13.0	35.0			1955-01 #18	Automatic
				Koban/			type oil
						Lubrication
				Hirose
				Standard
7.0	5.5/13.0	35.0	Large		1955-01 #21
				Koban/

Hirose

2.3

Motor, Motor

Pulley and V-Belt

Specifications

•½ HP (400W) 2-pole (high speed) clutch motor

•M type v-belt

Table 2 – Machine Speed vs. Motor Pulley Diameter
Machine Speed [spm]			Motor Pulley Diameter [mm]
191C-20 / 20C	191C-30 / 30C	191C-70 / 70C	50 Hz	60 Hz
5,000	-	-	125
				105
4,500	4,500	-	115	95
-	4,000	-	100	85
-	3,500	-	90	75
-	-	3,000	75	65
-	-	2,500	65	55

High Speed Straight Lockstitch Sewing Machine Instruction Manual and Parts List 4